<?xml version="1.0" encoding="UTF-8"?>

<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="subscription-notification-bundle"/>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-category">
    <valueString value="Foundation.Other"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-security-category">
    <valueCode value="not-classified"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="fhir"/>
  </extension>
  <url value="http://hl7.org/fhir/StructureDefinition/subscription-notification-bundle"/>
  <version value="6.0.0-ballot4"/>
  <name value="SubscriptionNotificationBundle"/>
  <title value="Subscription Notification bundle"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2026-06-14T21:56:23+00:00"/>
  <publisher value="HL7 International / FHIR Infrastructure"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://www.hl7.org/Special/committees/fiwg"/>
    </telecom>
  </contact>
  <description value="This profile holds all the requirements and constraints related to a Subscription Notification Bundle."/>
  <fhirVersion value="6.0.0-ballot4"/>
  <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="cda"/>
    <uri value="http://hl7.org/v3/cda"/>
    <name value="CDA (R2)"/>
  </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="Bundle"/>
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
  <derivation value="constraint"/>
  <snapshot>
    <extension url="http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version">
      <valueString value="6.0.0-ballot4"/>
    </extension>
    <element id="Bundle">
      <path value="Bundle"/>
      <short value="Contains a collection of resources"/>
      <definition value="A container for a collection of resources."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="Bundle"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <constraint>
        <key value="bdl-1"/>
        <requirements value="There are only two Bundle types where paging is supported and there's a need to know the size of the result set beyond what's in the current instance."/>
        <severity value="error"/>
        <human value="total only when a search or history"/>
        <expression value="total.empty() or (type = 'searchset') or (type = 'history')"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-2"/>
        <severity value="error"/>
        <human value="entry.search only when a search"/>
        <expression value="(type = 'searchset') or entry.search.empty()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-7"/>
        <severity value="error"/>
        <human value="FullUrl must be unique in a bundle, or else entries with the same fullUrl must have different meta.versionId (except in history bundles)"/>
        <expression value="(type = 'history') or entry.where(fullUrl.exists()).select(fullUrl&amp;iif(resource.meta.versionId.exists(), resource.meta.versionId, '')).isDistinct()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-9"/>
        <severity value="error"/>
        <human value="A document must have an identifier with a system and a value"/>
        <expression value="type = 'document' implies (identifier.system.exists() and identifier.value.exists())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-10"/>
        <severity value="error"/>
        <human value="A document must have a date"/>
        <expression value="type = 'document' implies (timestamp.hasValue())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-11"/>
        <severity value="error"/>
        <human value="A document must have a Composition as the first resource"/>
        <expression value="type = 'document' implies entry.first().resource.is(Composition)"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-12"/>
        <severity value="error"/>
        <human value="A message must have a MessageHeader as the first resource"/>
        <expression value="type = 'message' implies entry.first().resource.is(MessageHeader)"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-13"/>
        <severity value="error"/>
        <human value="A subscription-notification must have a SubscriptionStatus as the first resource"/>
        <expression value="type = 'subscription-notification' implies entry.first().resource.is(SubscriptionStatus)"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-14"/>
        <severity value="error"/>
        <human value="entry.request.method PATCH not allowed for history"/>
        <expression value="type = 'history' implies entry.request.method != 'PATCH'"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-15"/>
        <severity value="error"/>
        <human value="Bundle resources where type is not transaction, transaction-response, batch, or batch-response or when the request is a POST SHALL have Bundle.entry.fullUrl populated"/>
        <expression value="type='transaction' or type='transaction-response' or type='batch' or type='batch-response' or entry.all(fullUrl.exists() or request.method='POST')"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-16"/>
        <severity value="error"/>
        <human value="Issue.severity for all issues within the OperationOutcome must be either 'information' or 'warning'."/>
        <expression value="issues.exists() implies (issues.issue.severity = 'information' or issues.issue.severity = 'warning')"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-17"/>
        <severity value="error"/>
        <human value="Use and meaning of issues for documents has not been validated because the content will not be rendered in the document."/>
        <expression value="type = 'document' implies issues.empty()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-18"/>
        <severity value="error"/>
        <human value="Self link is required for searchsets."/>
        <expression value="type = 'searchset' implies link.where(relation = 'self' and url.exists()).exists()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-3a"/>
        <severity value="error"/>
        <human value="For collections of type document, message, searchset or collection, all entries must contain resources, and not have request or response elements"/>
        <expression value="type in ('document' | 'message' | 'searchset' | 'collection') implies entry.all(resource.exists() and request.empty() and response.empty())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-3b"/>
        <severity value="error"/>
        <human value="For collections of type history, all entries must contain request or response elements, and resources if the method is POST, PUT or PATCH"/>
        <expression value="type = 'history' implies entry.all(request.exists() and response.exists() and ((request.method in ('POST' | 'PATCH' | 'PUT')) = resource.exists()))"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-3c"/>
        <severity value="error"/>
        <human value="For collections of type transaction or batch, all entries must contain request elements, and resources if the method is POST, PUT or PATCH"/>
        <expression value="type in ('transaction' | 'batch') implies entry.all(request.method.exists() and ((request.method in ('POST' | 'PATCH' | 'PUT')) = resource.exists()))"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-3d"/>
        <severity value="error"/>
        <human value="For collections of type transaction-response or batch-response, all entries must contain response elements"/>
        <expression value="type in ('transaction-response' | 'batch-response') implies entry.all(response.exists())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="Entity. Role, or Act,N/A"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="infrastructure.structure"/>
      </mapping>
      <mapping>
        <identity value="v2"/>
        <map value="N/A"/>
      </mapping>
      <mapping>
        <identity value="cda"/>
        <map value="ClinicalDocument, if bundle.type = document"/>
      </mapping>
    </element>
    <element id="Bundle.id">
      <path value="Bundle.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="Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case."/>
      <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="Bundle.meta">
      <path value="Bundle.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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.implicitRules">
      <path value="Bundle.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. For DomainResources, if more than one implicitRules policy applies, additional policies may be conveyed using the [additionalImplicitRules](https://build.fhir.org/ig/HL7/fhir-extensions/StructureDefinition-additionalImplicitRules.html) extension."/>
      <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 its 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())"/>
        <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 its meaning or interpretation"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.language">
      <path value="Bundle.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())"/>
        <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-bindingName">
          <valueString value="Language"/>
        </extension>
        <strength value="required"/>
        <description value="IETF language tag for a human language"/>
        <valueSet value="http://hl7.org/fhir/ValueSet/all-languages|6.0.0-ballot4"/>
        <additional>
          <purpose value="starter"/>
          <valueSet value="http://hl7.org/fhir/ValueSet/languages"/>
        </additional>
      </binding>
    </element>
    <element id="Bundle.identifier">
      <path value="Bundle.identifier"/>
      <short value="Persistent identifier for the bundle"/>
      <definition value="A persistent identifier for the bundle that won't change as a bundle is copied from server to server."/>
      <comment value="Persistent identity generally only matters for batches of type Document, Message, and Collection. It would not normally be populated for search and history results and servers ignore Bundle.identifier when processing batches and transactions. For Documents  the .identifier SHALL be populated such that the .identifier is globally unique."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.identifier"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="Identifier"/>
      </type>
      <condition value="bdl-9"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.identifier"/>
      </mapping>
      <mapping>
        <identity value="cda"/>
        <map value="ClinicalDocument.id"/>
      </mapping>
    </element>
    <element id="Bundle.type">
      <path value="Bundle.type"/>
      <short value="document | message | transaction | transaction-response | batch | batch-response | history | searchset | collection | subscription-notification"/>
      <definition value="Indicates the purpose of this bundle - how it is intended to be used."/>
      <comment value="It's possible to use a bundle for other purposes (e.g. a document can be accepted as a transaction). This is primarily defined so that there can be specific rules for some of the bundle types."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.type"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="code"/>
      </type>
      <patternCode value="subscription-notification"/>
      <condition value="bdl-1"/>
      <condition value="bdl-2"/>
      <condition value="bdl-3a"/>
      <condition value="bdl-3b"/>
      <condition value="bdl-3c"/>
      <condition value="bdl-3d"/>
      <condition value="bdl-7"/>
      <condition value="bdl-9"/>
      <condition value="bdl-10"/>
      <condition value="bdl-11"/>
      <condition value="bdl-12"/>
      <condition value="bdl-13"/>
      <condition value="bdl-14"/>
      <condition value="bdl-15"/>
      <condition value="bdl-17"/>
      <condition value="bdl-18"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="BundleType"/>
        </extension>
        <strength value="required"/>
        <description value="Indicates the purpose of a bundle - how it is intended to be used."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/bundle-type|6.0.0-ballot4"/>
      </binding>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.class"/>
      </mapping>
    </element>
    <element id="Bundle.timestamp">
      <path value="Bundle.timestamp"/>
      <short value="When the bundle was assembled"/>
      <definition value="The date/time that the bundle was assembled - i.e. when the resources were placed in the bundle."/>
      <comment value="For many bundles, the timestamp is equal to .meta.lastUpdated, because they are not stored (e.g. search results). When a bundle is placed in a persistent store, .meta.lastUpdated will be usually be changed by the server. When the bundle is a message, a middleware agent altering the message (even if not stored) SHOULD update .meta.lastUpdated. .timestamp is used to track the original time of the Bundle, and SHOULD be populated.  &#xA;&#xA;Usage:&#xA;&#xA;* document : the date the document was created. Note: the composition may predate the document, or be associated with multiple documents. The date of the composition - the authoring time - may be earlier than the document assembly time&#xA;* message : the date that the content of the message was assembled. This date is not changed by middleware engines unless they add additional data that changes the meaning of the time of the message&#xA;* history : the date that the history was assembled. This time would be used as the _since time to ask for subsequent updates&#xA;* searchset : the time that the search set was assembled. Note that different pages MAY have different timestamps but need not. Having different timestamps does not imply that subsequent pages will represent or include changes made since the initial query&#xA;* transaction | transaction-response | batch | batch-response | collection : no particular assigned meaning&#xA;&#xA;The timestamp value should be greater than the lastUpdated and other timestamps in the resources in the bundle, and it should be equal or earlier than the .meta.lastUpdated on the Bundle itself."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.timestamp"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="instant"/>
      </type>
      <condition value="bdl-10"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.init"/>
      </mapping>
      <mapping>
        <identity value="cda"/>
        <map value="ClinicalDocument.effectiveTime"/>
      </mapping>
    </element>
    <element id="Bundle.total">
      <path value="Bundle.total"/>
      <short value="Total matches across all pages"/>
      <definition value="If a set of search matches or a history, this is the (potentially estimated) total number of entries of type 'match' across all pages in the search.  It does not include search.mode = 'include' or 'outcome' entries and it does not provide a count of the number of entries in the Bundle."/>
      <comment value="Only used if the bundle is a search or history result set. The total does not include resources such as OperationOutcome and included resources, only the total number of matching resources."/>
      <min value="0"/>
      <max value="0"/>
      <base>
        <path value="Bundle.total"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="unsignedInt"/>
      </type>
      <condition value="bdl-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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.link">
      <path value="Bundle.link"/>
      <short value="Links related to this Bundle"/>
      <definition value="A series of links that provide context to this bundle."/>
      <comment value="Both Bundle.link and Bundle.entry.link are defined to support providing additional context when Bundles are used (e.g. [HATEOAS](http://en.wikipedia.org/wiki/HATEOAS)). &#xA;&#xA;Bundle.entry.link corresponds to links found in the HTTP header if the resource in the entry was [read](http.html#read) directly.&#xA;&#xA;This specification defines some specific uses of Bundle.link for [searching](search.html#conformance) and [paging](http.html#paging), but no specific uses for Bundle.entry.link, and no defined function in a transaction - the meaning is implementation specific.  The behavior of navigation link types (next/prev/first/last) are well defined for searchset and history Bundles but are not currently defined for other types. Implementers who choose to use such link relationships for other bundle types will need to negotiate behavior with their interoperability partners."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="Bundle.link"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="bdl-18"/>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children or both"/>
        <expression value="hasValue() or (children().count() &gt; id.count())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.link.id">
      <path value="Bundle.link.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>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.link.extension">
      <path value="Bundle.link.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 managable, 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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.link.modifierExtension">
      <path value="Bundle.link.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 managable, 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.&#xA;&#xA;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](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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </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="Bundle.link.relation">
      <path value="Bundle.link.relation"/>
      <short value="See http://www.iana.org/assignments/link-relations/link-relations.xhtml#link-relations-1"/>
      <definition value="A name which details the functional use for this link - see [http://www.iana.org/assignments/link-relations/link-relations.xhtml#link-relations-1](http://www.iana.org/assignments/link-relations/link-relations.xhtml#link-relations-1)."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.link.relation"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="code"/>
      </type>
      <condition value="bdl-18"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <strength value="required"/>
        <valueSet value="http://hl7.org/fhir/ValueSet/iana-link-relations|6.0.0-ballot4"/>
      </binding>
    </element>
    <element id="Bundle.link.url">
      <path value="Bundle.link.url"/>
      <short value="Reference details for the link"/>
      <definition value="The reference details for the link."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.link.url"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="uri"/>
      </type>
      <condition value="bdl-18"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry">
      <path value="Bundle.entry"/>
      <slicing>
        <discriminator>
          <type value="exists"/>
          <path value="$this"/>
        </discriminator>
        <description value="Slice to enforce first entry is NessageHeader."/>
        <ordered value="true"/>
        <rules value="openAtEnd"/>
      </slicing>
      <short value="Entry in the bundle - will have a resource or information"/>
      <definition value="An entry in a bundle resource - will either contain a resource or information about a resource (transactions and history only)."/>
      <min value="1"/>
      <max value="*"/>
      <base>
        <path value="Bundle.entry"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <orderMeaning value="For bundles of type 'document' and 'message', the first resource is special (must be Composition or MessageHeader respectively). For all bundles, the meaning of the order of entries depends on the bundle type"/>
      <condition value="bdl-11"/>
      <condition value="bdl-12"/>
      <condition value="bdl-13"/>
      <condition value="bdl-14"/>
      <condition value="bdl-15"/>
      <condition value="bdl-2"/>
      <constraint>
        <key value="bdl-5"/>
        <severity value="error"/>
        <human value="must be a resource unless there's a request or response"/>
        <expression value="resource.exists() or request.exists() or response.exists()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-8"/>
        <severity value="error"/>
        <human value="fullUrl cannot be a version specific reference"/>
        <expression value="fullUrl.exists() implies fullUrl.contains('/_history/').not()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children or both"/>
        <expression value="hasValue() or (children().count() &gt; id.count())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.id">
      <path value="Bundle.entry.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>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry.extension">
      <path value="Bundle.entry.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 managable, 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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry.modifierExtension">
      <path value="Bundle.entry.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 managable, 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.&#xA;&#xA;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](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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </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="Bundle.entry.link">
      <path value="Bundle.entry.link"/>
      <short value="Links related to this entry"/>
      <definition value="A series of links that provide context to this entry."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="Bundle.entry.link"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Bundle#Bundle.link"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.fullUrl">
      <path value="Bundle.entry.fullUrl"/>
      <short value="URI for resource (e.g. the absolute URL server address, URI for UUID/OID, etc.)"/>
      <definition value="The Absolute URL for the resource. Except for transactions and batches, each entry in a Bundle must have a fullUrl. The fullUrl SHALL NOT disagree with the id in the resource - i.e. if the fullUrl is not a urn:uuid, the URL shall be version-independent URL consistent with the Resource.id. The fullUrl is a version independent reference to the resource. Even when not required, fullUrl MAY be set to a urn:uuid to allow referencing entries in a transaction. The fullUrl can be an arbitrary URI and is not limited to urn:uuid, urn:oid, http, and https. The fullUrl element SHALL have a value unless:&#xA;* the Bundle is a batch or transaction request or response AND&#xA;* the entry is&#xA;    * invoking a create&#xA;  * invoking or responding to an operation where the body is not a single identified resource&#xA;  * invoking or returning the results of a search or history operation."/>
      <comment value="fullUrl might not be [unique in the context of a resource](bundle.html#bundle-unique). Note that since [FHIR resources do not need to be served through the FHIR API](references.html), the fullUrl might be a URN or an absolute URL that does not end with the logical id of the resource (Resource.id). However, if the fullUrl does look like a RESTful server URL (e.g. meets the [regex](references.html#regex), then the portion of the URL that, by FHIR syntax, corresponds to the resource type and id within the fullUrl SHALL match the resource type and id of the resource.&#xA;&#xA;Note that the fullUrl is not the same as the canonical URL - it's an absolute url for an endpoint serving the resource (these will happen to have the same value on the canonical server for the resource with the canonical URL)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.fullUrl"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="uri"/>
      </type>
      <condition value="bdl-7"/>
      <condition value="bdl-15"/>
      <condition value="bdl-8"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.resource">
      <path value="Bundle.entry.resource"/>
      <short value="A resource in the bundle"/>
      <definition value="The Resource for the entry. The purpose/meaning of the resource is determined by the Bundle.type. This is allowed to be a Parameters resource if and only if it is referenced by something else within the Bundle that provides context/meaning."/>
      <comment value="This may be a resource defined in the FHIR specification, or an [additional resource](resource.html#additional)"/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.resource"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="Resource"/>
      </type>
      <condition value="bdl-3a"/>
      <condition value="bdl-3b"/>
      <condition value="bdl-3c"/>
      <condition value="bdl-7"/>
      <condition value="bdl-11"/>
      <condition value="bdl-12"/>
      <condition value="bdl-13"/>
      <condition value="bdl-5"/>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.search">
      <path value="Bundle.entry.search"/>
      <short value="Search related information"/>
      <definition value="Information about the search process that lead to the creation of this entry."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.search"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="bdl-2"/>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children or both"/>
        <expression value="hasValue() or (children().count() &gt; id.count())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.search.id">
      <path value="Bundle.entry.search.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>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry.search.extension">
      <path value="Bundle.entry.search.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 managable, 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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry.search.modifierExtension">
      <path value="Bundle.entry.search.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 managable, 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.&#xA;&#xA;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](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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </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="Bundle.entry.search.mode">
      <path value="Bundle.entry.search.mode"/>
      <short value="match | include - why this is in the result set"/>
      <definition value="Why this entry is in the result set - whether it's included as a match or because of an _include requirement, or to convey information or warning information about the search process."/>
      <comment value="There is only one mode. In some corner cases, a resource may be included because it is both a match and an include. In these circumstances, 'match' takes precedence."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.search.mode"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="SearchEntryMode"/>
        </extension>
        <strength value="required"/>
        <description value="Why an entry is in the result set - whether it's included as a match or because of an _include requirement, or to convey information or warning information about the search process."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/search-entry-mode|6.0.0-ballot4"/>
      </binding>
    </element>
    <element id="Bundle.entry.search.score">
      <path value="Bundle.entry.search.score"/>
      <short value="Search ranking (between 0 and 1)"/>
      <definition value="When searching, the server's search ranking score for the entry."/>
      <comment value="Servers are not required to return a ranking score. 1 is most relevant, and 0 is least relevant. Often, search results are sorted by score, but the client may specify a different sort order.&#xA;&#xA;See [Patient Match](patient-operation-match.html) for the EMPI search which relates to this element."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.search.score"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="decimal"/>
      </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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.request">
      <path value="Bundle.entry.request"/>
      <short value="Additional execution information (transaction/batch/history)"/>
      <definition value="Additional information about how this entry should be processed as part of a transaction or batch.  For history, it shows how the entry was processed to create the version contained in the entry."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="bdl-3a"/>
      <condition value="bdl-3b"/>
      <condition value="bdl-5"/>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children or both"/>
        <expression value="hasValue() or (children().count() &gt; id.count())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.request.id">
      <path value="Bundle.entry.request.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>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry.request.extension">
      <path value="Bundle.entry.request.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 managable, 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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry.request.modifierExtension">
      <path value="Bundle.entry.request.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 managable, 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.&#xA;&#xA;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](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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </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="Bundle.entry.request.method">
      <path value="Bundle.entry.request.method"/>
      <short value="GET | HEAD | POST | PUT | DELETE | PATCH"/>
      <definition value="In a transaction or batch, this is the HTTP action to be executed for this entry. In a history bundle, this indicates the HTTP action that occurred."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.method"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="code"/>
      </type>
      <condition value="bdl-3b"/>
      <condition value="bdl-3c"/>
      <condition value="bdl-14"/>
      <condition value="bdl-15"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="HTTPVerb"/>
        </extension>
        <strength value="required"/>
        <description value="HTTP verbs (in the HTTP command line). See [HTTP rfc](https://tools.ietf.org/html/rfc7231) for details."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/http-verb|6.0.0-ballot4"/>
      </binding>
    </element>
    <element id="Bundle.entry.request.url">
      <path value="Bundle.entry.request.url"/>
      <short value="URL for HTTP equivalent of this entry"/>
      <definition value="The URL for this entry, relative to the root (the address to which the request is posted)."/>
      <comment value="E.g. for a Patient Create, the method would be &quot;POST&quot; and the URL would be &quot;Patient&quot;. For a Patient Update, the method would be PUT and the URL would be &quot;Patient/[id]&quot;."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.url"/>
        <min value="1"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.request.ifNoneMatch">
      <path value="Bundle.entry.request.ifNoneMatch"/>
      <short value="For managing cache validation"/>
      <definition value="If the ETag values match, return a 304 Not Modified status. See the API documentation for [&quot;Conditional Read&quot;](http.html#cread)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.ifNoneMatch"/>
        <min value="0"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.request.ifModifiedSince">
      <path value="Bundle.entry.request.ifModifiedSince"/>
      <short value="For managing cache currency"/>
      <definition value="Only perform the operation if the last updated date matches. See the API documentation for [&quot;Conditional Read&quot;](http.html#cread)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.ifModifiedSince"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="instant"/>
      </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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.request.ifMatch">
      <path value="Bundle.entry.request.ifMatch"/>
      <short value="For managing update contention"/>
      <definition value="Only perform the operation if the Etag value matches. For more information, see the API section [&quot;Managing Resource Contention&quot;](http.html#concurrency)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.ifMatch"/>
        <min value="0"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.request.ifNoneExist">
      <path value="Bundle.entry.request.ifNoneExist"/>
      <short value="For conditional creates"/>
      <definition value="Instruct the server not to perform the create if a specified resource already exists. For further information, see the API documentation for [&quot;Conditional Create&quot;](http.html#ccreate). This is just the query portion of the URL - what follows the &quot;?&quot; (not including the &quot;?&quot;)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.ifNoneExist"/>
        <min value="0"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.response">
      <path value="Bundle.entry.response"/>
      <short value="Results of execution (transaction/batch/history)"/>
      <definition value="Indicates the results of processing the corresponding 'request' entry in the batch or transaction being responded to or what the results of an operation where when returning history."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="bdl-3a"/>
      <condition value="bdl-3b"/>
      <condition value="bdl-3d"/>
      <condition value="bdl-5"/>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children or both"/>
        <expression value="hasValue() or (children().count() &gt; id.count())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.response.id">
      <path value="Bundle.entry.response.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>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry.response.extension">
      <path value="Bundle.entry.response.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 managable, 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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry.response.modifierExtension">
      <path value="Bundle.entry.response.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 managable, 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.&#xA;&#xA;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](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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </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="Bundle.entry.response.status">
      <path value="Bundle.entry.response.status"/>
      <short value="Status response code (text optional)"/>
      <definition value="The status code returned by processing this entry. The status SHALL start with a 3 digit HTTP code (e.g. 404) and may contain the standard HTTP description associated with the status code."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.status"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.response.location">
      <path value="Bundle.entry.response.location"/>
      <short value="The location (if the operation returns a location)"/>
      <definition value="The location header created by processing this operation, populated if the operation returns a location."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.location"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.response.etag">
      <path value="Bundle.entry.response.etag"/>
      <short value="The Etag for the resource (if relevant)"/>
      <definition value="The Etag for the resource, if the operation for the entry produced a versioned resource (see [Resource Metadata and Versioning](http.html#versioning) and [Managing Resource Contention](http.html#concurrency))."/>
      <comment value="Etags match the Resource.meta.versionId. The ETag has to match the version id in the header if a resource is included - e.g. W/'1'"/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.etag"/>
        <min value="0"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.response.lastModified">
      <path value="Bundle.entry.response.lastModified"/>
      <short value="Server's date time modified"/>
      <definition value="The date/time that the resource was modified on the server."/>
      <comment value="This has to match the same time in the meta header (meta.lastUpdated) if a resource is included."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.lastModified"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="instant"/>
      </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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry.response.outcome">
      <path value="Bundle.entry.response.outcome"/>
      <short value="OperationOutcome with hints and warnings (for batch/transaction)"/>
      <definition value="An OperationOutcome containing hints and warnings produced as part of processing this entry in a batch or transaction."/>
      <comment value="For a POST/PUT operation, this is the equivalent outcome that would be returned for prefer = operationoutcome - except that the resource is always returned whether or not the outcome is returned.&#xA;&#xA;This outcome is not used for error responses in batch/transaction, only for hints and warnings. In a batch operation, the error will be in Bundle.entry.response, and for transaction, there will be a single OperationOutcome instead of a bundle in the case of an error."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.outcome"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="Resource"/>
        <profile value="http://hl7.org/fhir/StructureDefinition/OperationOutcome"/>
      </type>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first">
      <path value="Bundle.entry"/>
      <sliceName value="first"/>
      <short value="Entry in the bundle - will have a resource or information"/>
      <definition value="An entry in a bundle resource - will either contain a resource or information about a resource (transactions and history only)."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <orderMeaning value="For bundles of type 'document' and 'message', the first resource is special (must be Composition or MessageHeader respectively). For all bundles, the meaning of the order of entries depends on the bundle type"/>
      <condition value="bdl-11"/>
      <condition value="bdl-12"/>
      <condition value="bdl-13"/>
      <condition value="bdl-14"/>
      <condition value="bdl-15"/>
      <condition value="bdl-2"/>
      <constraint>
        <key value="bdl-5"/>
        <severity value="error"/>
        <human value="must be a resource unless there's a request or response"/>
        <expression value="resource.exists() or request.exists() or response.exists()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-8"/>
        <severity value="error"/>
        <human value="fullUrl cannot be a version specific reference"/>
        <expression value="fullUrl.exists() implies fullUrl.contains('/_history/').not()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children or both"/>
        <expression value="hasValue() or (children().count() &gt; id.count())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.id">
      <path value="Bundle.entry.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>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:first.extension">
      <path value="Bundle.entry.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 managable, 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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:first.modifierExtension">
      <path value="Bundle.entry.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 managable, 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.&#xA;&#xA;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](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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </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="Bundle.entry:first.link">
      <path value="Bundle.entry.link"/>
      <short value="Links related to this entry"/>
      <definition value="A series of links that provide context to this entry."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="Bundle.entry.link"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Bundle#Bundle.link"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.fullUrl">
      <path value="Bundle.entry.fullUrl"/>
      <short value="URI for resource (e.g. the absolute URL server address, URI for UUID/OID, etc.)"/>
      <definition value="The Absolute URL for the resource. Except for transactions and batches, each entry in a Bundle must have a fullUrl. The fullUrl SHALL NOT disagree with the id in the resource - i.e. if the fullUrl is not a urn:uuid, the URL shall be version-independent URL consistent with the Resource.id. The fullUrl is a version independent reference to the resource. Even when not required, fullUrl MAY be set to a urn:uuid to allow referencing entries in a transaction. The fullUrl can be an arbitrary URI and is not limited to urn:uuid, urn:oid, http, and https. The fullUrl element SHALL have a value unless:&#xA;* the Bundle is a batch or transaction request or response AND&#xA;* the entry is&#xA;    * invoking a create&#xA;  * invoking or responding to an operation where the body is not a single identified resource&#xA;  * invoking or returning the results of a search or history operation."/>
      <comment value="fullUrl might not be [unique in the context of a resource](bundle.html#bundle-unique). Note that since [FHIR resources do not need to be served through the FHIR API](references.html), the fullUrl might be a URN or an absolute URL that does not end with the logical id of the resource (Resource.id). However, if the fullUrl does look like a RESTful server URL (e.g. meets the [regex](references.html#regex), then the portion of the URL that, by FHIR syntax, corresponds to the resource type and id within the fullUrl SHALL match the resource type and id of the resource.&#xA;&#xA;Note that the fullUrl is not the same as the canonical URL - it's an absolute url for an endpoint serving the resource (these will happen to have the same value on the canonical server for the resource with the canonical URL)."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.fullUrl"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="uri"/>
      </type>
      <condition value="bdl-7"/>
      <condition value="bdl-15"/>
      <condition value="bdl-8"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.resource">
      <path value="Bundle.entry.resource"/>
      <short value="A resource in the bundle"/>
      <definition value="The Resource for the entry. The purpose/meaning of the resource is determined by the Bundle.type. This is allowed to be a Parameters resource if and only if it is referenced by something else within the Bundle that provides context/meaning."/>
      <comment value="This may be a resource defined in the FHIR specification, or an [additional resource](resource.html#additional)"/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.resource"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="SubscriptionStatus"/>
      </type>
      <condition value="bdl-3a"/>
      <condition value="bdl-3b"/>
      <condition value="bdl-3c"/>
      <condition value="bdl-7"/>
      <condition value="bdl-11"/>
      <condition value="bdl-12"/>
      <condition value="bdl-13"/>
      <condition value="bdl-5"/>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.search">
      <path value="Bundle.entry.search"/>
      <short value="Search related information"/>
      <definition value="Information about the search process that lead to the creation of this entry."/>
      <min value="0"/>
      <max value="0"/>
      <base>
        <path value="Bundle.entry.search"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="bdl-2"/>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children or both"/>
        <expression value="hasValue() or (children().count() &gt; id.count())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.search.id">
      <path value="Bundle.entry.search.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>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:first.search.extension">
      <path value="Bundle.entry.search.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 managable, 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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:first.search.modifierExtension">
      <path value="Bundle.entry.search.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 managable, 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.&#xA;&#xA;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](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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </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="Bundle.entry:first.search.mode">
      <path value="Bundle.entry.search.mode"/>
      <short value="match | include - why this is in the result set"/>
      <definition value="Why this entry is in the result set - whether it's included as a match or because of an _include requirement, or to convey information or warning information about the search process."/>
      <comment value="There is only one mode. In some corner cases, a resource may be included because it is both a match and an include. In these circumstances, 'match' takes precedence."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.search.mode"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="SearchEntryMode"/>
        </extension>
        <strength value="required"/>
        <description value="Why an entry is in the result set - whether it's included as a match or because of an _include requirement, or to convey information or warning information about the search process."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/search-entry-mode|6.0.0-ballot4"/>
      </binding>
    </element>
    <element id="Bundle.entry:first.search.score">
      <path value="Bundle.entry.search.score"/>
      <short value="Search ranking (between 0 and 1)"/>
      <definition value="When searching, the server's search ranking score for the entry."/>
      <comment value="Servers are not required to return a ranking score. 1 is most relevant, and 0 is least relevant. Often, search results are sorted by score, but the client may specify a different sort order.&#xA;&#xA;See [Patient Match](patient-operation-match.html) for the EMPI search which relates to this element."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.search.score"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="decimal"/>
      </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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.request">
      <path value="Bundle.entry.request"/>
      <short value="Additional execution information (transaction/batch/history)"/>
      <definition value="Additional information about how this entry should be processed as part of a transaction or batch.  For history, it shows how the entry was processed to create the version contained in the entry."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="bdl-3a"/>
      <condition value="bdl-3b"/>
      <condition value="bdl-5"/>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children or both"/>
        <expression value="hasValue() or (children().count() &gt; id.count())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.request.id">
      <path value="Bundle.entry.request.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>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:first.request.extension">
      <path value="Bundle.entry.request.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 managable, 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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:first.request.modifierExtension">
      <path value="Bundle.entry.request.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 managable, 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.&#xA;&#xA;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](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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </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="Bundle.entry:first.request.method">
      <path value="Bundle.entry.request.method"/>
      <short value="GET | HEAD | POST | PUT | DELETE | PATCH"/>
      <definition value="In a transaction or batch, this is the HTTP action to be executed for this entry. In a history bundle, this indicates the HTTP action that occurred."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.method"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="code"/>
      </type>
      <condition value="bdl-3b"/>
      <condition value="bdl-3c"/>
      <condition value="bdl-14"/>
      <condition value="bdl-15"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="HTTPVerb"/>
        </extension>
        <strength value="required"/>
        <description value="HTTP verbs (in the HTTP command line). See [HTTP rfc](https://tools.ietf.org/html/rfc7231) for details."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/http-verb|6.0.0-ballot4"/>
      </binding>
    </element>
    <element id="Bundle.entry:first.request.url">
      <path value="Bundle.entry.request.url"/>
      <short value="URL for HTTP equivalent of this entry"/>
      <definition value="The URL for this entry, relative to the root (the address to which the request is posted)."/>
      <comment value="E.g. for a Patient Create, the method would be &quot;POST&quot; and the URL would be &quot;Patient&quot;. For a Patient Update, the method would be PUT and the URL would be &quot;Patient/[id]&quot;."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.url"/>
        <min value="1"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.request.ifNoneMatch">
      <path value="Bundle.entry.request.ifNoneMatch"/>
      <short value="For managing cache validation"/>
      <definition value="If the ETag values match, return a 304 Not Modified status. See the API documentation for [&quot;Conditional Read&quot;](http.html#cread)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.ifNoneMatch"/>
        <min value="0"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.request.ifModifiedSince">
      <path value="Bundle.entry.request.ifModifiedSince"/>
      <short value="For managing cache currency"/>
      <definition value="Only perform the operation if the last updated date matches. See the API documentation for [&quot;Conditional Read&quot;](http.html#cread)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.ifModifiedSince"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="instant"/>
      </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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.request.ifMatch">
      <path value="Bundle.entry.request.ifMatch"/>
      <short value="For managing update contention"/>
      <definition value="Only perform the operation if the Etag value matches. For more information, see the API section [&quot;Managing Resource Contention&quot;](http.html#concurrency)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.ifMatch"/>
        <min value="0"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.request.ifNoneExist">
      <path value="Bundle.entry.request.ifNoneExist"/>
      <short value="For conditional creates"/>
      <definition value="Instruct the server not to perform the create if a specified resource already exists. For further information, see the API documentation for [&quot;Conditional Create&quot;](http.html#ccreate). This is just the query portion of the URL - what follows the &quot;?&quot; (not including the &quot;?&quot;)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.ifNoneExist"/>
        <min value="0"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.response">
      <path value="Bundle.entry.response"/>
      <short value="Results of execution (transaction/batch/history)"/>
      <definition value="Indicates the results of processing the corresponding 'request' entry in the batch or transaction being responded to or what the results of an operation where when returning history."/>
      <min value="0"/>
      <max value="0"/>
      <base>
        <path value="Bundle.entry.response"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="bdl-3a"/>
      <condition value="bdl-3b"/>
      <condition value="bdl-3d"/>
      <condition value="bdl-5"/>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children or both"/>
        <expression value="hasValue() or (children().count() &gt; id.count())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.response.id">
      <path value="Bundle.entry.response.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>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:first.response.extension">
      <path value="Bundle.entry.response.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 managable, 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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:first.response.modifierExtension">
      <path value="Bundle.entry.response.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 managable, 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.&#xA;&#xA;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](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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </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="Bundle.entry:first.response.status">
      <path value="Bundle.entry.response.status"/>
      <short value="Status response code (text optional)"/>
      <definition value="The status code returned by processing this entry. The status SHALL start with a 3 digit HTTP code (e.g. 404) and may contain the standard HTTP description associated with the status code."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.status"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.response.location">
      <path value="Bundle.entry.response.location"/>
      <short value="The location (if the operation returns a location)"/>
      <definition value="The location header created by processing this operation, populated if the operation returns a location."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.location"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.response.etag">
      <path value="Bundle.entry.response.etag"/>
      <short value="The Etag for the resource (if relevant)"/>
      <definition value="The Etag for the resource, if the operation for the entry produced a versioned resource (see [Resource Metadata and Versioning](http.html#versioning) and [Managing Resource Contention](http.html#concurrency))."/>
      <comment value="Etags match the Resource.meta.versionId. The ETag has to match the version id in the header if a resource is included - e.g. W/'1'"/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.etag"/>
        <min value="0"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.response.lastModified">
      <path value="Bundle.entry.response.lastModified"/>
      <short value="Server's date time modified"/>
      <definition value="The date/time that the resource was modified on the server."/>
      <comment value="This has to match the same time in the meta header (meta.lastUpdated) if a resource is included."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.lastModified"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="instant"/>
      </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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:first.response.outcome">
      <path value="Bundle.entry.response.outcome"/>
      <short value="OperationOutcome with hints and warnings (for batch/transaction)"/>
      <definition value="An OperationOutcome containing hints and warnings produced as part of processing this entry in a batch or transaction."/>
      <comment value="For a POST/PUT operation, this is the equivalent outcome that would be returned for prefer = operationoutcome - except that the resource is always returned whether or not the outcome is returned.&#xA;&#xA;This outcome is not used for error responses in batch/transaction, only for hints and warnings. In a batch operation, the error will be in Bundle.entry.response, and for transaction, there will be a single OperationOutcome instead of a bundle in the case of an error."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.outcome"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="Resource"/>
        <profile value="http://hl7.org/fhir/StructureDefinition/OperationOutcome"/>
      </type>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other">
      <path value="Bundle.entry"/>
      <sliceName value="other"/>
      <short value="Entry in the bundle - will have a resource or information"/>
      <definition value="An entry in a bundle resource - will either contain a resource or information about a resource (transactions and history only)."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="Bundle.entry"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <orderMeaning value="For bundles of type 'document' and 'message', the first resource is special (must be Composition or MessageHeader respectively). For all bundles, the meaning of the order of entries depends on the bundle type"/>
      <condition value="bdl-11"/>
      <condition value="bdl-12"/>
      <condition value="bdl-13"/>
      <condition value="bdl-14"/>
      <condition value="bdl-15"/>
      <condition value="bdl-2"/>
      <constraint>
        <key value="bdl-5"/>
        <severity value="error"/>
        <human value="must be a resource unless there's a request or response"/>
        <expression value="resource.exists() or request.exists() or response.exists()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="bdl-8"/>
        <severity value="error"/>
        <human value="fullUrl cannot be a version specific reference"/>
        <expression value="fullUrl.exists() implies fullUrl.contains('/_history/').not()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Bundle"/>
      </constraint>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children or both"/>
        <expression value="hasValue() or (children().count() &gt; id.count())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.id">
      <path value="Bundle.entry.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>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:other.extension">
      <path value="Bundle.entry.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 managable, 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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:other.modifierExtension">
      <path value="Bundle.entry.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 managable, 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.&#xA;&#xA;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](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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </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="Bundle.entry:other.link">
      <path value="Bundle.entry.link"/>
      <short value="Links related to this entry"/>
      <definition value="A series of links that provide context to this entry."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="Bundle.entry.link"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <contentReference value="http://hl7.org/fhir/StructureDefinition/Bundle#Bundle.link"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.fullUrl">
      <path value="Bundle.entry.fullUrl"/>
      <short value="URI for resource (e.g. the absolute URL server address, URI for UUID/OID, etc.)"/>
      <definition value="The Absolute URL for the resource. Except for transactions and batches, each entry in a Bundle must have a fullUrl. The fullUrl SHALL NOT disagree with the id in the resource - i.e. if the fullUrl is not a urn:uuid, the URL shall be version-independent URL consistent with the Resource.id. The fullUrl is a version independent reference to the resource. Even when not required, fullUrl MAY be set to a urn:uuid to allow referencing entries in a transaction. The fullUrl can be an arbitrary URI and is not limited to urn:uuid, urn:oid, http, and https. The fullUrl element SHALL have a value unless:&#xA;* the Bundle is a batch or transaction request or response AND&#xA;* the entry is&#xA;    * invoking a create&#xA;  * invoking or responding to an operation where the body is not a single identified resource&#xA;  * invoking or returning the results of a search or history operation."/>
      <comment value="fullUrl might not be [unique in the context of a resource](bundle.html#bundle-unique). Note that since [FHIR resources do not need to be served through the FHIR API](references.html), the fullUrl might be a URN or an absolute URL that does not end with the logical id of the resource (Resource.id). However, if the fullUrl does look like a RESTful server URL (e.g. meets the [regex](references.html#regex), then the portion of the URL that, by FHIR syntax, corresponds to the resource type and id within the fullUrl SHALL match the resource type and id of the resource.&#xA;&#xA;Note that the fullUrl is not the same as the canonical URL - it's an absolute url for an endpoint serving the resource (these will happen to have the same value on the canonical server for the resource with the canonical URL)."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.fullUrl"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="uri"/>
      </type>
      <condition value="bdl-7"/>
      <condition value="bdl-15"/>
      <condition value="bdl-8"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.resource">
      <path value="Bundle.entry.resource"/>
      <short value="A resource in the bundle"/>
      <definition value="The Resource for the entry. The purpose/meaning of the resource is determined by the Bundle.type. This is allowed to be a Parameters resource if and only if it is referenced by something else within the Bundle that provides context/meaning."/>
      <comment value="This may be a resource defined in the FHIR specification, or an [additional resource](resource.html#additional)"/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.resource"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="Resource"/>
      </type>
      <condition value="bdl-3a"/>
      <condition value="bdl-3b"/>
      <condition value="bdl-3c"/>
      <condition value="bdl-7"/>
      <condition value="bdl-11"/>
      <condition value="bdl-12"/>
      <condition value="bdl-13"/>
      <condition value="bdl-5"/>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.search">
      <path value="Bundle.entry.search"/>
      <short value="Search related information"/>
      <definition value="Information about the search process that lead to the creation of this entry."/>
      <min value="0"/>
      <max value="0"/>
      <base>
        <path value="Bundle.entry.search"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="bdl-2"/>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children or both"/>
        <expression value="hasValue() or (children().count() &gt; id.count())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.search.id">
      <path value="Bundle.entry.search.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>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:other.search.extension">
      <path value="Bundle.entry.search.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 managable, 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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:other.search.modifierExtension">
      <path value="Bundle.entry.search.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 managable, 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.&#xA;&#xA;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](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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </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="Bundle.entry:other.search.mode">
      <path value="Bundle.entry.search.mode"/>
      <short value="match | include - why this is in the result set"/>
      <definition value="Why this entry is in the result set - whether it's included as a match or because of an _include requirement, or to convey information or warning information about the search process."/>
      <comment value="There is only one mode. In some corner cases, a resource may be included because it is both a match and an include. In these circumstances, 'match' takes precedence."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.search.mode"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="SearchEntryMode"/>
        </extension>
        <strength value="required"/>
        <description value="Why an entry is in the result set - whether it's included as a match or because of an _include requirement, or to convey information or warning information about the search process."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/search-entry-mode|6.0.0-ballot4"/>
      </binding>
    </element>
    <element id="Bundle.entry:other.search.score">
      <path value="Bundle.entry.search.score"/>
      <short value="Search ranking (between 0 and 1)"/>
      <definition value="When searching, the server's search ranking score for the entry."/>
      <comment value="Servers are not required to return a ranking score. 1 is most relevant, and 0 is least relevant. Often, search results are sorted by score, but the client may specify a different sort order.&#xA;&#xA;See [Patient Match](patient-operation-match.html) for the EMPI search which relates to this element."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.search.score"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="decimal"/>
      </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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.request">
      <path value="Bundle.entry.request"/>
      <short value="Additional execution information (transaction/batch/history)"/>
      <definition value="Additional information about how this entry should be processed as part of a transaction or batch.  For history, it shows how the entry was processed to create the version contained in the entry."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="bdl-3a"/>
      <condition value="bdl-3b"/>
      <condition value="bdl-5"/>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children or both"/>
        <expression value="hasValue() or (children().count() &gt; id.count())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.request.id">
      <path value="Bundle.entry.request.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>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:other.request.extension">
      <path value="Bundle.entry.request.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 managable, 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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:other.request.modifierExtension">
      <path value="Bundle.entry.request.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 managable, 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.&#xA;&#xA;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](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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </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="Bundle.entry:other.request.method">
      <path value="Bundle.entry.request.method"/>
      <short value="GET | HEAD | POST | PUT | DELETE | PATCH"/>
      <definition value="In a transaction or batch, this is the HTTP action to be executed for this entry. In a history bundle, this indicates the HTTP action that occurred."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.method"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="code"/>
      </type>
      <condition value="bdl-3b"/>
      <condition value="bdl-3c"/>
      <condition value="bdl-14"/>
      <condition value="bdl-15"/>
      <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="HTTPVerb"/>
        </extension>
        <strength value="required"/>
        <description value="HTTP verbs (in the HTTP command line). See [HTTP rfc](https://tools.ietf.org/html/rfc7231) for details."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/http-verb|6.0.0-ballot4"/>
      </binding>
    </element>
    <element id="Bundle.entry:other.request.url">
      <path value="Bundle.entry.request.url"/>
      <short value="URL for HTTP equivalent of this entry"/>
      <definition value="The URL for this entry, relative to the root (the address to which the request is posted)."/>
      <comment value="E.g. for a Patient Create, the method would be &quot;POST&quot; and the URL would be &quot;Patient&quot;. For a Patient Update, the method would be PUT and the URL would be &quot;Patient/[id]&quot;."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.url"/>
        <min value="1"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.request.ifNoneMatch">
      <path value="Bundle.entry.request.ifNoneMatch"/>
      <short value="For managing cache validation"/>
      <definition value="If the ETag values match, return a 304 Not Modified status. See the API documentation for [&quot;Conditional Read&quot;](http.html#cread)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.ifNoneMatch"/>
        <min value="0"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.request.ifModifiedSince">
      <path value="Bundle.entry.request.ifModifiedSince"/>
      <short value="For managing cache currency"/>
      <definition value="Only perform the operation if the last updated date matches. See the API documentation for [&quot;Conditional Read&quot;](http.html#cread)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.ifModifiedSince"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="instant"/>
      </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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.request.ifMatch">
      <path value="Bundle.entry.request.ifMatch"/>
      <short value="For managing update contention"/>
      <definition value="Only perform the operation if the Etag value matches. For more information, see the API section [&quot;Managing Resource Contention&quot;](http.html#concurrency)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.ifMatch"/>
        <min value="0"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.request.ifNoneExist">
      <path value="Bundle.entry.request.ifNoneExist"/>
      <short value="For conditional creates"/>
      <definition value="Instruct the server not to perform the create if a specified resource already exists. For further information, see the API documentation for [&quot;Conditional Create&quot;](http.html#ccreate). This is just the query portion of the URL - what follows the &quot;?&quot; (not including the &quot;?&quot;)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.request.ifNoneExist"/>
        <min value="0"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.response">
      <path value="Bundle.entry.response"/>
      <short value="Results of execution (transaction/batch/history)"/>
      <definition value="Indicates the results of processing the corresponding 'request' entry in the batch or transaction being responded to or what the results of an operation where when returning history."/>
      <min value="0"/>
      <max value="0"/>
      <base>
        <path value="Bundle.entry.response"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="bdl-3a"/>
      <condition value="bdl-3b"/>
      <condition value="bdl-3d"/>
      <condition value="bdl-5"/>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children or both"/>
        <expression value="hasValue() or (children().count() &gt; id.count())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.response.id">
      <path value="Bundle.entry.response.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>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:other.response.extension">
      <path value="Bundle.entry.response.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 managable, 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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Bundle.entry:other.response.modifierExtension">
      <path value="Bundle.entry.response.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 managable, 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.&#xA;&#xA;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](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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </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="Bundle.entry:other.response.status">
      <path value="Bundle.entry.response.status"/>
      <short value="Status response code (text optional)"/>
      <definition value="The status code returned by processing this entry. The status SHALL start with a 3 digit HTTP code (e.g. 404) and may contain the standard HTTP description associated with the status code."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.status"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.response.location">
      <path value="Bundle.entry.response.location"/>
      <short value="The location (if the operation returns a location)"/>
      <definition value="The location header created by processing this operation, populated if the operation returns a location."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.location"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.response.etag">
      <path value="Bundle.entry.response.etag"/>
      <short value="The Etag for the resource (if relevant)"/>
      <definition value="The Etag for the resource, if the operation for the entry produced a versioned resource (see [Resource Metadata and Versioning](http.html#versioning) and [Managing Resource Contention](http.html#concurrency))."/>
      <comment value="Etags match the Resource.meta.versionId. The ETag has to match the version id in the header if a resource is included - e.g. W/'1'"/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.etag"/>
        <min value="0"/>
        <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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.response.lastModified">
      <path value="Bundle.entry.response.lastModified"/>
      <short value="Server's date time modified"/>
      <definition value="The date/time that the resource was modified on the server."/>
      <comment value="This has to match the same time in the meta header (meta.lastUpdated) if a resource is included."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.lastModified"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="instant"/>
      </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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.entry:other.response.outcome">
      <path value="Bundle.entry.response.outcome"/>
      <short value="OperationOutcome with hints and warnings (for batch/transaction)"/>
      <definition value="An OperationOutcome containing hints and warnings produced as part of processing this entry in a batch or transaction."/>
      <comment value="For a POST/PUT operation, this is the equivalent outcome that would be returned for prefer = operationoutcome - except that the resource is always returned whether or not the outcome is returned.&#xA;&#xA;This outcome is not used for error responses in batch/transaction, only for hints and warnings. In a batch operation, the error will be in Bundle.entry.response, and for transaction, there will be a single OperationOutcome instead of a bundle in the case of an error."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.entry.response.outcome"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="Resource"/>
        <profile value="http://hl7.org/fhir/StructureDefinition/OperationOutcome"/>
      </type>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.signature">
      <path value="Bundle.signature"/>
      <short value="Digital Signature (deprecated: use Provenance Signatures)"/>
      <definition value="Digital Signature: XML-DSig or JWS. This element is deprecated, and [Provenance based Signatures](signatures.html#Bundle) should be used instead."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.signature"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="Signature"/>
      </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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="Bundle.issues">
      <path value="Bundle.issues"/>
      <short value="OperationOutcome with issues about the Bundle"/>
      <definition value="An OperationOutcome that captures issues and warnings that relate to the construction of the Bundle and the content within it."/>
      <comment value="Usage notes: These issues and warnings must apply to the Bundle as a whole, not to individual entries. Messages relating to the processing of individual entries (e.g. in a batch or transaction) SHALL be reported in the entry.response.outcome for that entry.  If there are errors that arise in the creation of the Bundle, then that should be handled by an OperationOutcome being returned instead of the Bundle."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Bundle.issues"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="Resource"/>
        <profile value="http://hl7.org/fhir/StructureDefinition/OperationOutcome"/>
      </type>
      <condition value="bdl-16"/>
      <condition value="bdl-17"/>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
  </snapshot>
  <differential>
    <element id="Bundle.type">
      <path value="Bundle.type"/>
      <patternCode value="subscription-notification"/>
    </element>
    <element id="Bundle.total">
      <path value="Bundle.total"/>
      <max value="0"/>
    </element>
    <element id="Bundle.entry">
      <path value="Bundle.entry"/>
      <slicing>
        <discriminator>
          <type value="exists"/>
          <path value="$this"/>
        </discriminator>
        <description value="Slice to enforce first entry is NessageHeader."/>
        <ordered value="true"/>
        <rules value="openAtEnd"/>
      </slicing>
      <min value="1"/>
    </element>
    <element id="Bundle.entry:first">
      <path value="Bundle.entry"/>
      <sliceName value="first"/>
      <min value="1"/>
      <max value="1"/>
    </element>
    <element id="Bundle.entry:first.fullUrl">
      <path value="Bundle.entry.fullUrl"/>
      <min value="1"/>
    </element>
    <element id="Bundle.entry:first.resource">
      <path value="Bundle.entry.resource"/>
      <min value="1"/>
      <type>
        <code value="SubscriptionStatus"/>
      </type>
    </element>
    <element id="Bundle.entry:first.search">
      <path value="Bundle.entry.search"/>
      <max value="0"/>
    </element>
    <element id="Bundle.entry:first.response">
      <path value="Bundle.entry.response"/>
      <max value="0"/>
    </element>
    <element id="Bundle.entry:other">
      <path value="Bundle.entry"/>
      <sliceName value="other"/>
    </element>
    <element id="Bundle.entry:other.fullUrl">
      <path value="Bundle.entry.fullUrl"/>
      <min value="1"/>
    </element>
    <element id="Bundle.entry:other.search">
      <path value="Bundle.entry.search"/>
      <max value="0"/>
    </element>
    <element id="Bundle.entry:other.response">
      <path value="Bundle.entry.response"/>
      <max value="0"/>
    </element>
  </differential>
</StructureDefinition>