Document Subscription for Mobile (DSUBm)
1.0.1-current - ci-build

Document Subscription for Mobile (DSUBm), published by IHE IT Infrastructure Technical Committee. This guide is not an authorized publication; it is the continuous build for version 1.0.1-current built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/IHE/ITI.DSUBm/ and changes regularly. See the Directory of published versions

## Resource Profile: SubscriptionStatus_Deactivation - XML Profile

Active as of 2025-04-28

XML representation of the IHE.DSUBm.SubscriptionStatus-Deactivation resource profile.

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    <StructureDefinition xmlns="http://hl7.org/fhir">
      <id value="IHE.DSUBm.SubscriptionStatus-Deactivation"/>
      <text>
        <status value="extensions"/>
        <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: StructureDefinition IHE.DSUBm.SubscriptionStatus-Deactivation</b></p><a name="IHE.DSUBm.SubscriptionStatus-Deactivation"> </a><a name="hcIHE.DSUBm.SubscriptionStatus-Deactivation"> </a><a name="IHE.DSUBm.SubscriptionStatus-Deactivation-en-US"> </a><table border="0" cellpadding="0" cellspacing="0" style="border: 0px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top;"><tr style="border: 1px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top"><th style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="The logical name of the element">Name</a></th><th style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Information about the use of the element">Flags</a></th><th style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Minimum and Maximum # of times the element can appear in the instance">Card.</a></th><th style="width: 100px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Reference to the type of the element">Type</a></th><th style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Additional information about the element">Description &amp; Constraints</a><span style="float: right"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64, " alt="doco" style="background-color: inherit"/></a></span></th></tr><tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_resource.png" alt="." style="background-color: white; background-color: inherit" title="Resource" class="hierarchy"/> <a href="StructureDefinition-IHE.DSUBm.SubscriptionStatus-Deactivation-definitions.html#Parameters">Parameters</a><a name="Parameters"> </a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/uv/subscriptions-backport/STU1.1/StructureDefinition-backport-subscription-status-r4.html">BackportSubscriptionStatusR4</a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/></tr>
    <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck03.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_slice.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Slice Definition" class="hierarchy"/> Slices for parameter<a name="Parameters.parameter"> </a></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Content/Rules for all slices</td></tr>
    <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck035.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_slicer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_slice_item.png" alt="." style="background-color: white; background-color: inherit" title="Slice Item" class="hierarchy"/> <a href="StructureDefinition-IHE.DSUBm.SubscriptionStatus-Deactivation-definitions.html#Parameters.parameter:status" title="Slice status">parameter:status</a><a name="Parameters.parameter.2"> </a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">1</span><span style="opacity: 0.5">..</span><span style="opacity: 0.5">1</span></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#BackboneElement">BackboneElement</a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">Parameter containing the subscription status</span></td></tr>
    <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck0340.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vline_slicer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end_slice.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_element.gif" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-IHE.DSUBm.SubscriptionStatus-Deactivation-definitions.html#Parameters.parameter:status.value[x]">value[x]</a><a name="Parameters.parameter.value_x_"> </a></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">1</span><span style="opacity: 0.5">..</span><span style="opacity: 0.5">1</span></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#code">code</a></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">Status of the subscription when this notification was generated</span><br/><span style="font-weight:bold">Required Pattern: </span><span style="color: darkgreen">off</span></td></tr>
    <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck025.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end_slicer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_slice_item.png" alt="." style="background-color: white; background-color: inherit" title="Slice Item" class="hierarchy"/> <a href="StructureDefinition-IHE.DSUBm.SubscriptionStatus-Deactivation-definitions.html#Parameters.parameter:type" title="Slice type">parameter:type</a><a name="Parameters.parameter.3"> </a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">1</span><span style="opacity: 0.5">..</span><span style="opacity: 0.5">1</span></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#BackboneElement">BackboneElement</a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">Parameter containing the type of event for this notification</span></td></tr>
    <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck0240.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end_slice.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_element.gif" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-IHE.DSUBm.SubscriptionStatus-Deactivation-definitions.html#Parameters.parameter:type.value[x]">value[x]</a><a name="Parameters.parameter.value_x_.2"> </a></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">1</span><span style="opacity: 0.5">..</span><span style="opacity: 0.5">1</span></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#code">code</a></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">The type of event being conveyed with this notificaiton.</span><br/><span style="font-weight:bold">Required Pattern: </span><span style="color: darkgreen">event-notification</span></td></tr>
    <tr><td colspan="5" class="hierarchy"><br/><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64, " alt="doco" style="background-color: inherit"/> Documentation for this format</a></td></tr></table></div>
      </text>
      <url
           value="https://profiles.ihe.net/ITI/DSUBm/StructureDefinition/IHE.DSUBm.SubscriptionStatus-Deactivation"/>
      <version value="1.0.1-current"/>
      <name value="SubscriptionStatus_Deactivation"/>
      <title
             value="SubscriptionStatus for the Subscription Deactivation Notification event"/>
      <status value="active"/>
      <date value="2025-04-28T16:57:25+00:00"/>
      <publisher value="IHE IT Infrastructure Technical Committee"/>
      <contact>
        <telecom>
          <system value="url"/>
          <value value="https://www.ihe.net/ihe_domains/it_infrastructure/"/>
        </telecom>
      </contact>
      <contact>
        <telecom>
          <system value="email"/>
          <value value="iti@ihe.net"/>
        </telecom>
      </contact>
      <contact>
        <name value="IHE IT Infrastructure Technical Committee"/>
        <telecom>
          <system value="email"/>
          <value value="iti@ihe.net"/>
        </telecom>
      </contact>
      <description
                   value="Profile on the SubscriptionStatus resource the Subscription Deactivation Notification"/>
      <jurisdiction>
        <coding>
          <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
          <code value="001"/>
        </coding>
      </jurisdiction>
      <fhirVersion value="4.0.1"/>
      <mapping>
        <identity value="v2"/>
        <uri value="http://hl7.org/v2"/>
        <name value="HL7 v2 Mapping"/>
      </mapping>
      <mapping>
        <identity value="rim"/>
        <uri value="http://hl7.org/v3"/>
        <name value="RIM Mapping"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <uri value="http://hl7.org/fhir/fivews"/>
        <name value="FiveWs Pattern Mapping"/>
      </mapping>
      <kind value="resource"/>
      <abstract value="false"/>
      <type value="Parameters"/>
      <baseDefinition
                      value="http://hl7.org/fhir/uv/subscriptions-backport/StructureDefinition/backport-subscription-status-r4"/>
      <derivation value="constraint"/>
      <snapshot>
        <extension
                   url="http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version">
          <valueString value="1.1.0"/>
        </extension>
        <element id="Parameters">
          <path value="Parameters"/>
          <short value="Parameter containing subscription status information"/>
          <definition
                      value="This resource is a non-persisted resource used to pass information into and back from an [operation](http://hl7.org/fhir/R4/operations.html). It has no other use, and there is no RESTful endpoint associated with it."/>
          <comment
                   value="The parameters that may be used are defined by the OperationDefinition resource."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="Entity. Role, or Act"/>
          </mapping>
          <mapping>
            <identity value="v2"/>
            <map value="n/a"/>
          </mapping>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
          <mapping>
            <identity value="w5"/>
            <map value="infrastructure.exchange"/>
          </mapping>
        </element>
        <element id="Parameters.id">
          <path value="Parameters.id"/>
          <short value="Logical id of this artifact"/>
          <definition
                      value="The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes."/>
          <comment
                   value="The only time that a resource does not have an id is when it is being submitted to the server using a create operation."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Resource.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="id"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.meta">
          <path value="Parameters.meta"/>
          <short value="Metadata about the resource"/>
          <definition
                      value="The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Resource.meta"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Meta"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.implicitRules">
          <path value="Parameters.implicitRules"/>
          <short value="A set of rules under which this content was created"/>
          <definition
                      value="A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc."/>
          <comment
                   value="Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Resource.implicitRules"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="uri"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="true"/>
          <isModifierReason
                            value="This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.language">
          <path value="Parameters.language"/>
          <short value="Language of the resource content"/>
          <definition
                      value="The base language in which the resource is written."/>
          <comment
                   value="Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies  to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute)."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Resource.language"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="code"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <binding>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet">
              <valueCanonical value="http://hl7.org/fhir/ValueSet/all-languages"/>
            </extension>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
              <valueString value="Language"/>
            </extension>
            <strength value="preferred"/>
            <description value="IETF language tag"/>
            <valueSet value="http://hl7.org/fhir/ValueSet/languages"/>
          </binding>
        </element>
        <element id="Parameters.parameter">
          <path value="Parameters.parameter"/>
          <slicing>
            <discriminator>
              <type value="value"/>
              <path value="name"/>
            </discriminator>
            <description value="Slice on parameter name"/>
            <ordered value="false"/>
            <rules value="open"/>
          </slicing>
          <short value="Slices containing subscription status information"/>
          <definition
                      value="A parameter passed to or received from the operation."/>
          <min value="3"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human
                   value="All FHIR elements must have a @value or children unless an empty Parameters resource"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count()) or $this is Parameters"/>
            <xpath value="@value|f:*|h:div|self::f:Parameters"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="inv-1"/>
            <severity value="error"/>
            <human
                   value="A parameter must have one and only one of (value, resource, part)"/>
            <expression
                        value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))"/>
            <xpath
                   value="(exists(f:part) and not(exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:resource))) or (not(exists(f:part)) and (exists(f:*[starts-with(local-name(.),'value')]) != exists(f:resource)))"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Parameters"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter.id">
          <path value="Parameters.parameter.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter.extension">
          <path value="Parameters.parameter.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter.modifierExtension">
          <path value="Parameters.parameter.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <requirements
                        value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element id="Parameters.parameter.name">
          <path value="Parameters.parameter.name"/>
          <short value="Name from the definition"/>
          <definition
                      value="The name of the parameter (reference to the operation definition)."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.name"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter.value[x]">
          <extension
                     url="http://hl7.org/fhir/build/StructureDefinition/no-binding">
            <valueBoolean value="true"/>
          </extension>
          <path value="Parameters.parameter.value[x]"/>
          <short value="If parameter is a data type"/>
          <definition
                      value="Conveys the content if the parameter is a data type."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.value[x]"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="base64Binary"/>
          </type>
          <type>
            <code value="boolean"/>
          </type>
          <type>
            <code value="canonical"/>
          </type>
          <type>
            <code value="code"/>
          </type>
          <type>
            <code value="date"/>
          </type>
          <type>
            <code value="dateTime"/>
          </type>
          <type>
            <code value="decimal"/>
          </type>
          <type>
            <code value="id"/>
          </type>
          <type>
            <code value="instant"/>
          </type>
          <type>
            <code value="integer"/>
          </type>
          <type>
            <code value="markdown"/>
          </type>
          <type>
            <code value="oid"/>
          </type>
          <type>
            <code value="positiveInt"/>
          </type>
          <type>
            <code value="string"/>
          </type>
          <type>
            <code value="time"/>
          </type>
          <type>
            <code value="unsignedInt"/>
          </type>
          <type>
            <code value="uri"/>
          </type>
          <type>
            <code value="url"/>
          </type>
          <type>
            <code value="uuid"/>
          </type>
          <type>
            <code value="Address"/>
          </type>
          <type>
            <code value="Age"/>
          </type>
          <type>
            <code value="Annotation"/>
          </type>
          <type>
            <code value="Attachment"/>
          </type>
          <type>
            <code value="CodeableConcept"/>
          </type>
          <type>
            <code value="Coding"/>
          </type>
          <type>
            <code value="ContactPoint"/>
          </type>
          <type>
            <code value="Count"/>
          </type>
          <type>
            <code value="Distance"/>
          </type>
          <type>
            <code value="Duration"/>
          </type>
          <type>
            <code value="HumanName"/>
          </type>
          <type>
            <code value="Identifier"/>
          </type>
          <type>
            <code value="Money"/>
          </type>
          <type>
            <code value="Period"/>
          </type>
          <type>
            <code value="Quantity"/>
          </type>
          <type>
            <code value="Range"/>
          </type>
          <type>
            <code value="Ratio"/>
          </type>
          <type>
            <code value="Reference"/>
          </type>
          <type>
            <code value="SampledData"/>
          </type>
          <type>
            <code value="Signature"/>
          </type>
          <type>
            <code value="Timing"/>
          </type>
          <type>
            <code value="ContactDetail"/>
          </type>
          <type>
            <code value="Contributor"/>
          </type>
          <type>
            <code value="DataRequirement"/>
          </type>
          <type>
            <code value="Expression"/>
          </type>
          <type>
            <code value="ParameterDefinition"/>
          </type>
          <type>
            <code value="RelatedArtifact"/>
          </type>
          <type>
            <code value="TriggerDefinition"/>
          </type>
          <type>
            <code value="UsageContext"/>
          </type>
          <type>
            <code value="Dosage"/>
          </type>
          <type>
            <code value="Meta"/>
          </type>
          <condition value="inv-1"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter.resource">
          <path value="Parameters.parameter.resource"/>
          <short value="If parameter is a whole resource"/>
          <definition value="If the parameter is a whole resource."/>
          <comment
                   value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.resource"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Resource"/>
          </type>
          <condition value="inv-1"/>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter.part">
          <path value="Parameters.parameter.part"/>
          <short value="Named part of a multi-part parameter"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <contentReference
                            value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:subscription">
          <path value="Parameters.parameter"/>
          <sliceName value="subscription"/>
          <short value="Parameter containing the reference to a subscription"/>
          <definition
                      value="A parameter passed to or received from the operation."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human
                   value="All FHIR elements must have a @value or children unless an empty Parameters resource"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count()) or $this is Parameters"/>
            <xpath value="@value|f:*|h:div|self::f:Parameters"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="inv-1"/>
            <severity value="error"/>
            <human
                   value="A parameter must have one and only one of (value, resource, part)"/>
            <expression
                        value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))"/>
            <xpath
                   value="(exists(f:part) and not(exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:resource))) or (not(exists(f:part)) and (exists(f:*[starts-with(local-name(.),'value')]) != exists(f:resource)))"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Parameters"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:subscription.id">
          <path value="Parameters.parameter.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:subscription.extension">
          <path value="Parameters.parameter.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:subscription.modifierExtension">
          <path value="Parameters.parameter.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <requirements
                        value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:subscription.name">
          <path value="Parameters.parameter.name"/>
          <short value="Slice discriminator: the reference to a subscription"/>
          <definition
                      value="The name of the parameter (reference to the operation definition)."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.name"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <fixedString value="subscription"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:subscription.value[x]">
          <extension
                     url="http://hl7.org/fhir/build/StructureDefinition/no-binding">
            <valueBoolean value="true"/>
          </extension>
          <path value="Parameters.parameter.value[x]"/>
          <short
                 value="Reference to the Subscription responsible for this notification"/>
          <definition
                      value="The reference to the Subscription which generated this notification."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.value[x]"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Reference"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Subscription"/>
          </type>
          <condition value="inv-1"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:subscription.resource">
          <path value="Parameters.parameter.resource"/>
          <short value="If parameter is a whole resource"/>
          <definition value="If the parameter is a whole resource."/>
          <comment
                   value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.resource"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Resource"/>
          </type>
          <condition value="inv-1"/>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:subscription.part">
          <path value="Parameters.parameter.part"/>
          <short value="Named part of a multi-part parameter"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <contentReference
                            value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:topic">
          <path value="Parameters.parameter"/>
          <sliceName value="topic"/>
          <short
                 value="Parameter containing the canonical reference to a subscription topic"/>
          <definition
                      value="A parameter passed to or received from the operation."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human
                   value="All FHIR elements must have a @value or children unless an empty Parameters resource"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count()) or $this is Parameters"/>
            <xpath value="@value|f:*|h:div|self::f:Parameters"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="inv-1"/>
            <severity value="error"/>
            <human
                   value="A parameter must have one and only one of (value, resource, part)"/>
            <expression
                        value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))"/>
            <xpath
                   value="(exists(f:part) and not(exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:resource))) or (not(exists(f:part)) and (exists(f:*[starts-with(local-name(.),'value')]) != exists(f:resource)))"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Parameters"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:topic.id">
          <path value="Parameters.parameter.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:topic.extension">
          <path value="Parameters.parameter.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:topic.modifierExtension">
          <path value="Parameters.parameter.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <requirements
                        value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:topic.name">
          <path value="Parameters.parameter.name"/>
          <short
                 value="Slice discriminator: the canonical reference to a subscription topic"/>
          <definition
                      value="The name of the parameter (reference to the operation definition)."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.name"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <fixedString value="topic"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:topic.value[x]">
          <extension
                     url="http://hl7.org/fhir/build/StructureDefinition/no-binding">
            <valueBoolean value="true"/>
          </extension>
          <path value="Parameters.parameter.value[x]"/>
          <short
                 value="Canonical reference to the SubscriptionTopic this notification relates to"/>
          <definition
                      value="Canonical reference to the SubscriptionTopic for the Subscription which generated this notification."/>
          <comment
                   value="This value SHOULD NOT be present when using `empty` payloads, MAY be present when using id-only payloads, and SHOULD be present when using `full-resource` payloads."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.value[x]"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="canonical"/>
          </type>
          <condition value="inv-1"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:topic.resource">
          <path value="Parameters.parameter.resource"/>
          <short value="If parameter is a whole resource"/>
          <definition value="If the parameter is a whole resource."/>
          <comment
                   value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.resource"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Resource"/>
          </type>
          <condition value="inv-1"/>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:topic.part">
          <path value="Parameters.parameter.part"/>
          <short value="Named part of a multi-part parameter"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <contentReference
                            value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:status">
          <path value="Parameters.parameter"/>
          <sliceName value="status"/>
          <short value="Parameter containing the subscription status"/>
          <definition
                      value="A parameter passed to or received from the operation."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human
                   value="All FHIR elements must have a @value or children unless an empty Parameters resource"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count()) or $this is Parameters"/>
            <xpath value="@value|f:*|h:div|self::f:Parameters"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="inv-1"/>
            <severity value="error"/>
            <human
                   value="A parameter must have one and only one of (value, resource, part)"/>
            <expression
                        value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))"/>
            <xpath
                   value="(exists(f:part) and not(exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:resource))) or (not(exists(f:part)) and (exists(f:*[starts-with(local-name(.),'value')]) != exists(f:resource)))"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Parameters"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:status.id">
          <path value="Parameters.parameter.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:status.extension">
          <path value="Parameters.parameter.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:status.modifierExtension">
          <path value="Parameters.parameter.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <requirements
                        value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:status.name">
          <path value="Parameters.parameter.name"/>
          <short value="Slice discriminator: the subscription status"/>
          <definition
                      value="The name of the parameter (reference to the operation definition)."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.name"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <fixedString value="status"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:status.value[x]">
          <extension
                     url="http://hl7.org/fhir/build/StructureDefinition/no-binding">
            <valueBoolean value="true"/>
          </extension>
          <path value="Parameters.parameter.value[x]"/>
          <short
                 value="Status of the subscription when this notification was generated"/>
          <definition
                      value="The status of the subscription, which marks the server state for managing the subscription."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.value[x]"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="code"/>
          </type>
          <patternCode value="off"/>
          <condition value="inv-1"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <binding>
            <strength value="required"/>
            <valueSet value="http://hl7.org/fhir/ValueSet/subscription-status"/>
          </binding>
        </element>
        <element id="Parameters.parameter:status.resource">
          <path value="Parameters.parameter.resource"/>
          <short value="If parameter is a whole resource"/>
          <definition value="If the parameter is a whole resource."/>
          <comment
                   value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.resource"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Resource"/>
          </type>
          <condition value="inv-1"/>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:status.part">
          <path value="Parameters.parameter.part"/>
          <short value="Named part of a multi-part parameter"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <contentReference
                            value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:type">
          <path value="Parameters.parameter"/>
          <sliceName value="type"/>
          <short
                 value="Parameter containing the type of event for this notification"/>
          <definition
                      value="A parameter passed to or received from the operation."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human
                   value="All FHIR elements must have a @value or children unless an empty Parameters resource"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count()) or $this is Parameters"/>
            <xpath value="@value|f:*|h:div|self::f:Parameters"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="inv-1"/>
            <severity value="error"/>
            <human
                   value="A parameter must have one and only one of (value, resource, part)"/>
            <expression
                        value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))"/>
            <xpath
                   value="(exists(f:part) and not(exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:resource))) or (not(exists(f:part)) and (exists(f:*[starts-with(local-name(.),'value')]) != exists(f:resource)))"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Parameters"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:type.id">
          <path value="Parameters.parameter.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:type.extension">
          <path value="Parameters.parameter.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:type.modifierExtension">
          <path value="Parameters.parameter.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <requirements
                        value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:type.name">
          <path value="Parameters.parameter.name"/>
          <short
                 value="Slice discriminator: the type of event for this notification"/>
          <definition
                      value="The name of the parameter (reference to the operation definition)."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.name"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <fixedString value="type"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:type.value[x]">
          <extension
                     url="http://hl7.org/fhir/build/StructureDefinition/no-binding">
            <valueBoolean value="true"/>
          </extension>
          <path value="Parameters.parameter.value[x]"/>
          <short
                 value="The type of event being conveyed with this notificaiton."/>
          <definition
                      value="Conveys the content if the parameter is a data type."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.value[x]"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="code"/>
          </type>
          <patternCode value="event-notification"/>
          <condition value="inv-1"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <binding>
            <strength value="required"/>
            <valueSet
                      value="http://hl7.org/fhir/ValueSet/subscription-notification-type"/>
          </binding>
        </element>
        <element id="Parameters.parameter:type.resource">
          <path value="Parameters.parameter.resource"/>
          <short value="If parameter is a whole resource"/>
          <definition value="If the parameter is a whole resource."/>
          <comment
                   value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.resource"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Resource"/>
          </type>
          <condition value="inv-1"/>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:type.part">
          <path value="Parameters.parameter.part"/>
          <short value="Named part of a multi-part parameter"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <contentReference
                            value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:eventsSinceSubscriptionStart">
          <path value="Parameters.parameter"/>
          <sliceName value="eventsSinceSubscriptionStart"/>
          <short
                 value="Parameter containing the number of events since this subscription started"/>
          <definition
                      value="A parameter passed to or received from the operation."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human
                   value="All FHIR elements must have a @value or children unless an empty Parameters resource"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count()) or $this is Parameters"/>
            <xpath value="@value|f:*|h:div|self::f:Parameters"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="inv-1"/>
            <severity value="error"/>
            <human
                   value="A parameter must have one and only one of (value, resource, part)"/>
            <expression
                        value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))"/>
            <xpath
                   value="(exists(f:part) and not(exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:resource))) or (not(exists(f:part)) and (exists(f:*[starts-with(local-name(.),'value')]) != exists(f:resource)))"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Parameters"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:eventsSinceSubscriptionStart.id">
          <path value="Parameters.parameter.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:eventsSinceSubscriptionStart.extension">
          <path value="Parameters.parameter.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:eventsSinceSubscriptionStart.modifierExtension">
          <path value="Parameters.parameter.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <requirements
                        value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:eventsSinceSubscriptionStart.name">
          <path value="Parameters.parameter.name"/>
          <short
                 value="Slice discriminator: the number of events since this subscription started"/>
          <definition
                      value="The name of the parameter (reference to the operation definition)."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.name"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <fixedString value="events-since-subscription-start"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:eventsSinceSubscriptionStart.value[x]">
          <extension
                     url="http://hl7.org/fhir/build/StructureDefinition/no-binding">
            <valueBoolean value="true"/>
          </extension>
          <path value="Parameters.parameter.value[x]"/>
          <short value="Events since the Subscription was created"/>
          <definition
                      value="The total number of actual events which have been generated since the Subscription was created (inclusive of this notification) - regardless of how many have been successfully communicated. This number is NOT incremented for handshake and heartbeat notifications."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.value[x]"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <condition value="inv-1"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:eventsSinceSubscriptionStart.resource">
          <path value="Parameters.parameter.resource"/>
          <short value="If parameter is a whole resource"/>
          <definition value="If the parameter is a whole resource."/>
          <comment
                   value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.resource"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Resource"/>
          </type>
          <condition value="inv-1"/>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:eventsSinceSubscriptionStart.part">
          <path value="Parameters.parameter.part"/>
          <short value="Named part of a multi-part parameter"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <contentReference
                            value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:notificationEvent">
          <path value="Parameters.parameter"/>
          <sliceName value="notificationEvent"/>
          <short value="Parameter containing the event notification details"/>
          <definition
                      value="A parameter passed to or received from the operation."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human
                   value="All FHIR elements must have a @value or children unless an empty Parameters resource"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count()) or $this is Parameters"/>
            <xpath value="@value|f:*|h:div|self::f:Parameters"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="inv-1"/>
            <severity value="error"/>
            <human
                   value="A parameter must have one and only one of (value, resource, part)"/>
            <expression
                        value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))"/>
            <xpath
                   value="(exists(f:part) and not(exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:resource))) or (not(exists(f:part)) and (exists(f:*[starts-with(local-name(.),'value')]) != exists(f:resource)))"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Parameters"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:notificationEvent.id">
          <path value="Parameters.parameter.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:notificationEvent.extension">
          <path value="Parameters.parameter.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:notificationEvent.modifierExtension">
          <path value="Parameters.parameter.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <requirements
                        value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:notificationEvent.name">
          <path value="Parameters.parameter.name"/>
          <short value="Parameter containing notification event details"/>
          <definition
                      value="The name of the parameter (reference to the operation definition)."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.name"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <fixedString value="notification-event"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:notificationEvent.value[x]">
          <extension
                     url="http://hl7.org/fhir/build/StructureDefinition/no-binding">
            <valueBoolean value="true"/>
          </extension>
          <path value="Parameters.parameter.value[x]"/>
          <short value="If parameter is a data type"/>
          <definition
                      value="Conveys the content if the parameter is a data type."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.value[x]"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="base64Binary"/>
          </type>
          <type>
            <code value="boolean"/>
          </type>
          <type>
            <code value="canonical"/>
          </type>
          <type>
            <code value="code"/>
          </type>
          <type>
            <code value="date"/>
          </type>
          <type>
            <code value="dateTime"/>
          </type>
          <type>
            <code value="decimal"/>
          </type>
          <type>
            <code value="id"/>
          </type>
          <type>
            <code value="instant"/>
          </type>
          <type>
            <code value="integer"/>
          </type>
          <type>
            <code value="markdown"/>
          </type>
          <type>
            <code value="oid"/>
          </type>
          <type>
            <code value="positiveInt"/>
          </type>
          <type>
            <code value="string"/>
          </type>
          <type>
            <code value="time"/>
          </type>
          <type>
            <code value="unsignedInt"/>
          </type>
          <type>
            <code value="uri"/>
          </type>
          <type>
            <code value="url"/>
          </type>
          <type>
            <code value="uuid"/>
          </type>
          <type>
            <code value="Address"/>
          </type>
          <type>
            <code value="Age"/>
          </type>
          <type>
            <code value="Annotation"/>
          </type>
          <type>
            <code value="Attachment"/>
          </type>
          <type>
            <code value="CodeableConcept"/>
          </type>
          <type>
            <code value="Coding"/>
          </type>
          <type>
            <code value="ContactPoint"/>
          </type>
          <type>
            <code value="Count"/>
          </type>
          <type>
            <code value="Distance"/>
          </type>
          <type>
            <code value="Duration"/>
          </type>
          <type>
            <code value="HumanName"/>
          </type>
          <type>
            <code value="Identifier"/>
          </type>
          <type>
            <code value="Money"/>
          </type>
          <type>
            <code value="Period"/>
          </type>
          <type>
            <code value="Quantity"/>
          </type>
          <type>
            <code value="Range"/>
          </type>
          <type>
            <code value="Ratio"/>
          </type>
          <type>
            <code value="Reference"/>
          </type>
          <type>
            <code value="SampledData"/>
          </type>
          <type>
            <code value="Signature"/>
          </type>
          <type>
            <code value="Timing"/>
          </type>
          <type>
            <code value="ContactDetail"/>
          </type>
          <type>
            <code value="Contributor"/>
          </type>
          <type>
            <code value="DataRequirement"/>
          </type>
          <type>
            <code value="Expression"/>
          </type>
          <type>
            <code value="ParameterDefinition"/>
          </type>
          <type>
            <code value="RelatedArtifact"/>
          </type>
          <type>
            <code value="TriggerDefinition"/>
          </type>
          <type>
            <code value="UsageContext"/>
          </type>
          <type>
            <code value="Dosage"/>
          </type>
          <type>
            <code value="Meta"/>
          </type>
          <condition value="inv-1"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:notificationEvent.resource">
          <path value="Parameters.parameter.resource"/>
          <short value="If parameter is a whole resource"/>
          <definition value="If the parameter is a whole resource."/>
          <comment
                   value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.resource"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Resource"/>
          </type>
          <condition value="inv-1"/>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:notificationEvent.part">
          <path value="Parameters.parameter.part"/>
          <slicing>
            <discriminator>
              <type value="value"/>
              <path value="name"/>
            </discriminator>
            <description value="Slice on notification event parameter name"/>
            <ordered value="false"/>
            <rules value="open"/>
          </slicing>
          <short value="Named part of a multi-part parameter"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="1"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <contentReference
                            value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:notificationEvent.part:eventNumber">
          <path value="Parameters.parameter.part"/>
          <sliceName value="eventNumber"/>
          <short value="Parameter containing the event number"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:notificationEvent.part:eventNumber.id">
          <path value="Parameters.parameter.part.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventNumber.extension">
          <path value="Parameters.parameter.part.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventNumber.modifierExtension">
          <path value="Parameters.parameter.part.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <requirements
                        value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventNumber.name">
          <path value="Parameters.parameter.part.name"/>
          <short value="Slice discriminator: the event number"/>
          <definition
                      value="The name of the parameter (reference to the operation definition)."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.name"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <fixedString value="event-number"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventNumber.value[x]">
          <extension
                     url="http://hl7.org/fhir/build/StructureDefinition/no-binding">
            <valueBoolean value="true"/>
          </extension>
          <path value="Parameters.parameter.part.value[x]"/>
          <short value="Event number"/>
          <definition
                      value="The sequential number of this event in this subscription context."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.value[x]"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <condition value="inv-1"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventNumber.resource">
          <path value="Parameters.parameter.part.resource"/>
          <short value="If parameter is a whole resource"/>
          <definition value="If the parameter is a whole resource."/>
          <comment
                   value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.resource"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Resource"/>
          </type>
          <condition value="inv-1"/>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventNumber.part">
          <path value="Parameters.parameter.part.part"/>
          <short value="Named part of a multi-part parameter"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <contentReference
                            value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:notificationEvent.part:eventTimestamp">
          <path value="Parameters.parameter.part"/>
          <sliceName value="eventTimestamp"/>
          <short value="Parameter containing the event timestamp"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventTimestamp.id">
          <path value="Parameters.parameter.part.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventTimestamp.extension">
          <path value="Parameters.parameter.part.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventTimestamp.modifierExtension">
          <path value="Parameters.parameter.part.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <requirements
                        value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventTimestamp.name">
          <path value="Parameters.parameter.part.name"/>
          <short value="Slice discriminator: the event timestamp"/>
          <definition
                      value="The name of the parameter (reference to the operation definition)."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.name"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <fixedString value="timestamp"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventTimestamp.value[x]">
          <extension
                     url="http://hl7.org/fhir/build/StructureDefinition/no-binding">
            <valueBoolean value="true"/>
          </extension>
          <path value="Parameters.parameter.part.value[x]"/>
          <short value="The instant this event occurred"/>
          <definition value="The actual time this event occured on the server."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.value[x]"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="instant"/>
          </type>
          <condition value="inv-1"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventTimestamp.resource">
          <path value="Parameters.parameter.part.resource"/>
          <short value="If parameter is a whole resource"/>
          <definition value="If the parameter is a whole resource."/>
          <comment
                   value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.resource"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Resource"/>
          </type>
          <condition value="inv-1"/>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventTimestamp.part">
          <path value="Parameters.parameter.part.part"/>
          <short value="Named part of a multi-part parameter"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <contentReference
                            value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:notificationEvent.part:eventFocus">
          <path value="Parameters.parameter.part"/>
          <sliceName value="eventFocus"/>
          <short value="Parameter containing the event focus"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:notificationEvent.part:eventFocus.id">
          <path value="Parameters.parameter.part.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventFocus.extension">
          <path value="Parameters.parameter.part.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventFocus.modifierExtension">
          <path value="Parameters.parameter.part.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <requirements
                        value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventFocus.name">
          <path value="Parameters.parameter.part.name"/>
          <short value="Slice discriminator: the event focus"/>
          <definition
                      value="The name of the parameter (reference to the operation definition)."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.name"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <fixedString value="focus"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventFocus.value[x]">
          <extension
                     url="http://hl7.org/fhir/build/StructureDefinition/no-binding">
            <valueBoolean value="true"/>
          </extension>
          <path value="Parameters.parameter.part.value[x]"/>
          <short value="The focus of this event"/>
          <definition
                      value="The focus of this event. While this will usually be a reference to the focus resource of the event, it MAY contain a reference to a non-FHIR object."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.value[x]"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Reference"/>
          </type>
          <condition value="inv-1"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventFocus.resource">
          <path value="Parameters.parameter.part.resource"/>
          <short value="If parameter is a whole resource"/>
          <definition value="If the parameter is a whole resource."/>
          <comment
                   value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.resource"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Resource"/>
          </type>
          <condition value="inv-1"/>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventFocus.part">
          <path value="Parameters.parameter.part.part"/>
          <short value="Named part of a multi-part parameter"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <contentReference
                            value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventAdditionalContext">
          <path value="Parameters.parameter.part"/>
          <sliceName value="eventAdditionalContext"/>
          <short value="Parameter containing additional context for this event"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventAdditionalContext.id">
          <path value="Parameters.parameter.part.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventAdditionalContext.extension">
          <path value="Parameters.parameter.part.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventAdditionalContext.modifierExtension">
          <path value="Parameters.parameter.part.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <requirements
                        value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventAdditionalContext.name">
          <path value="Parameters.parameter.part.name"/>
          <short value="Slice discriminator: additional context for this event"/>
          <definition
                      value="The name of the parameter (reference to the operation definition)."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.name"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <fixedString value="additional-context"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventAdditionalContext.value[x]">
          <extension
                     url="http://hl7.org/fhir/build/StructureDefinition/no-binding">
            <valueBoolean value="true"/>
          </extension>
          <path value="Parameters.parameter.part.value[x]"/>
          <short value="Additional context for this event"/>
          <definition
                      value="Additional context information for this event. Generally, this will contain references to additional resources included with the event (e.g., the Patient relevant to an Encounter), however it MAY refer to non-FHIR objects."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.value[x]"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Reference"/>
          </type>
          <condition value="inv-1"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventAdditionalContext.resource">
          <path value="Parameters.parameter.part.resource"/>
          <short value="If parameter is a whole resource"/>
          <definition value="If the parameter is a whole resource."/>
          <comment
                   value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.resource"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Resource"/>
          </type>
          <condition value="inv-1"/>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element
                 id="Parameters.parameter:notificationEvent.part:eventAdditionalContext.part">
          <path value="Parameters.parameter.part.part"/>
          <short value="Named part of a multi-part parameter"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <contentReference
                            value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:error">
          <path value="Parameters.parameter"/>
          <sliceName value="error"/>
          <short value="Parameter containing errors on the subscription"/>
          <definition
                      value="A parameter passed to or received from the operation."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human
                   value="All FHIR elements must have a @value or children unless an empty Parameters resource"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count()) or $this is Parameters"/>
            <xpath value="@value|f:*|h:div|self::f:Parameters"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="inv-1"/>
            <severity value="error"/>
            <human
                   value="A parameter must have one and only one of (value, resource, part)"/>
            <expression
                        value="(part.exists() and value.empty() and resource.empty()) or (part.empty() and (value.exists() xor resource.exists()))"/>
            <xpath
                   value="(exists(f:part) and not(exists(f:*[starts-with(local-name(.), 'value')])) and not(exists(f:resource))) or (not(exists(f:part)) and (exists(f:*[starts-with(local-name(.),'value')]) != exists(f:resource)))"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Parameters"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:error.id">
          <path value="Parameters.parameter.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:error.extension">
          <path value="Parameters.parameter.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:error.modifierExtension">
          <path value="Parameters.parameter.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
          <comment
                   value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
          <requirements
                        value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.modifierExtension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element id="Parameters.parameter:error.name">
          <path value="Parameters.parameter.name"/>
          <short value="Slice discriminator: errors on the subscription"/>
          <definition
                      value="The name of the parameter (reference to the operation definition)."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.name"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="string"/>
          </type>
          <fixedString value="error"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:error.value[x]">
          <extension
                     url="http://hl7.org/fhir/build/StructureDefinition/no-binding">
            <valueBoolean value="true"/>
          </extension>
          <path value="Parameters.parameter.value[x]"/>
          <short value="An error on the subscription"/>
          <definition
                      value="A record of errors that occurred when the server processed a notification."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.value[x]"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="CodeableConcept"/>
          </type>
          <condition value="inv-1"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="true"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:error.resource">
          <path value="Parameters.parameter.resource"/>
          <short value="If parameter is a whole resource"/>
          <definition value="If the parameter is a whole resource."/>
          <comment
                   value="When resolving references in resources, the operation definition may specify how references may be resolved between parameters. If a reference cannot be resolved between the parameters, the application should fall back to it's general resource resolution methods."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Parameters.parameter.resource"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Resource"/>
          </type>
          <condition value="inv-1"/>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Parameters.parameter:error.part">
          <path value="Parameters.parameter.part"/>
          <short value="Named part of a multi-part parameter"/>
          <definition value="A named part of a multi-part parameter."/>
          <comment value="Only one level of nested parameters is allowed."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Parameters.parameter.part"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <contentReference
                            value="http://hl7.org/fhir/StructureDefinition/Parameters#Parameters.parameter"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
      </snapshot>
      <differential>
        <element id="Parameters.parameter:status">
          <path value="Parameters.parameter"/>
          <sliceName value="status"/>
        </element>
        <element id="Parameters.parameter:status.value[x]">
          <path value="Parameters.parameter.value[x]"/>
          <patternCode value="off"/>
        </element>
        <element id="Parameters.parameter:type">
          <path value="Parameters.parameter"/>
          <sliceName value="type"/>
        </element>
        <element id="Parameters.parameter:type.value[x]">
          <path value="Parameters.parameter.value[x]"/>
          <patternCode value="event-notification"/>
        </element>
      </differential>
    </StructureDefinition>