<?xml version="1.0" encoding="UTF-8"?>
<!-- 
 * #%L
 * org.hl7.fhir.r5
 * %%
 * Copyright (C) 2014 - 2019 Health Level 7
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

/*
  Copyright (c) 2011+, HL7, Inc.
  All rights reserved.
  
  Redistribution and use in source and binary forms, with or without modification, 
  are permitted provided that the following conditions are met:
  
   * Redistributions of source code must retain the above copyright notice, this 
     list of conditions and the following disclaimer.
   * Redistributions in binary form must reproduce the above copyright notice, 
     this list of conditions and the following disclaimer in the documentation 
     and/or other materials provided with the distribution.
   * Neither the name of HL7 nor the names of its contributors may be used to 
     endorse or promote products derived from this software without specific 
     prior written permission.
  
  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
  POSSIBILITY OF SUCH DAMAGE.
  

  Generated on Tue, May 19, 2026 20:26+0000 for FHIR v6.0.0-ballot4 

  Note: the schemas &amp; schematrons do not contain all of the rules about what makes resources
  valid. Implementers will still need to be familiar with the content of the specification and with
  any profiles that apply to the resources in order to make a conformant implementation.

-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://hl7.org/fhir" xmlns:xhtml="http://www.w3.org/1999/xhtml" targetNamespace="http://hl7.org/fhir" elementFormDefault="qualified" version="1.0">
  <xs:include schemaLocation="fhir-base.xsd"/>
  <xs:element name="Requirements" type="Requirements">
    <xs:annotation>
      <xs:documentation xml:lang="en">A set of requirements - a list of features or behaviors of designed systems that are necessary to achieve organizational or regulatory goals.</xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name="Requirements">
    <xs:annotation>
      <xs:documentation xml:lang="en">A set of requirements - a list of features or behaviors of designed systems that are necessary to achieve organizational or regulatory goals.</xs:documentation>
      <xs:documentation xml:lang="en">If the element is present, it must have either a @value, an @id, or extensions</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="CanonicalResource">
        <xs:sequence>
          <xs:element name="url" minOccurs="0" maxOccurs="1" type="uri">
            <xs:annotation>
              <xs:documentation xml:lang="en">An absolute URI that is used to identify this Requirements when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this Requirements is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the Requirements is stored on different servers.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="identifier" minOccurs="0" maxOccurs="unbounded" type="Identifier">
            <xs:annotation>
              <xs:documentation xml:lang="en">A formal identifier that is used to identify this Requirements when it is represented in other formats, or referenced in a specification, model, design or an instance.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="version" minOccurs="0" maxOccurs="1" type="string">
            <xs:annotation>
              <xs:documentation xml:lang="en">The identifier that is used to identify this version of the Requirements when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the Requirements author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:choice minOccurs="0" maxOccurs="1" >
            <xs:annotation>
              <xs:documentation xml:lang="en">Indicates the mechanism used to compare versions to determine which is more current.</xs:documentation>
            </xs:annotation>
            <xs:element name="versionAlgorithmString" type="string"/>
            <xs:element name="versionAlgorithmCoding" type="Coding"/>
          </xs:choice>
          <xs:element name="name" minOccurs="0" maxOccurs="1" type="string">
            <xs:annotation>
              <xs:documentation xml:lang="en">A natural language name identifying the Requirements. This name should be usable as an identifier for the module by machine processing applications such as code generation.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="title" minOccurs="0" maxOccurs="1" type="string">
            <xs:annotation>
              <xs:documentation xml:lang="en">A short, descriptive, user-friendly title for the Requirements.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="status" minOccurs="1" maxOccurs="1" type="PublicationStatus">
            <xs:annotation>
              <xs:documentation xml:lang="en">The status of this Requirements. Enables tracking the life-cycle of the content.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="experimental" minOccurs="0" maxOccurs="1" type="boolean">
            <xs:annotation>
              <xs:documentation xml:lang="en">A Boolean value to indicate that this Requirements is authored for testing purposes (or education/evaluation/marketing) and no version of this resource will ever be intended for genuine usage.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="date" minOccurs="0" maxOccurs="1" type="dateTime">
            <xs:annotation>
              <xs:documentation xml:lang="en">The date  (and optionally time) when the Requirements was published. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the Requirements changes.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="publisher" minOccurs="0" maxOccurs="1" type="string">
            <xs:annotation>
              <xs:documentation xml:lang="en">The name of the organization or individual responsible for the release and ongoing maintenance of the Requirements.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="contact" minOccurs="0" maxOccurs="unbounded" type="ContactDetail">
            <xs:annotation>
              <xs:documentation xml:lang="en">Contact details to assist a user in finding and communicating with the publisher.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="description" minOccurs="0" maxOccurs="1" type="markdown">
            <xs:annotation>
              <xs:documentation xml:lang="en">A free text natural language description of the requirements.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="useContext" minOccurs="0" maxOccurs="unbounded" type="UsageContext">
            <xs:annotation>
              <xs:documentation xml:lang="en">The content was developed with a focus and intent of supporting the contexts that are listed. These contexts may be general categories (gender, age, ...) or may be references to specific programs (insurance plans, studies, ...) and may be used to assist with indexing and searching for appropriate Requirements instances.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="jurisdiction" minOccurs="0" maxOccurs="unbounded" type="CodeableConcept">
            <xs:annotation>
              <xs:documentation xml:lang="en">A legal or geographic region in which the authority that maintains the resource is operating.  In general, the jurisdiction is also found in the useContext.  The useContext may reference additional jurisdictions because the defining jurisdiction does not necessarily limit the jurisdictions of use.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="purpose" minOccurs="0" maxOccurs="1" type="markdown">
            <xs:annotation>
              <xs:documentation xml:lang="en">Explanation of why this Requirements is needed and why it has been designed as it has.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="copyright" minOccurs="0" maxOccurs="1" type="markdown">
            <xs:annotation>
              <xs:documentation xml:lang="en">A copyright statement relating to the Requirements and/or its contents. Copyright statements are notices of intellectual property ownership and can include restrictions on the use and publishing of the Requirements.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="copyrightLabel" minOccurs="0" maxOccurs="1" type="string">
            <xs:annotation>
              <xs:documentation xml:lang="en">A short string (&lt;50 characters), suitable for inclusion in a page footer that identifies the copyright holder, effective period, and optionally whether rights are restricted. (e.g. 'All rights reserved', 'Some rights reserved').</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="derivedFrom" minOccurs="0" maxOccurs="unbounded" type="canonical">
            <xs:annotation>
              <xs:documentation xml:lang="en">Another set of Requirements that this set of Requirements builds on and updates.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="imports" type="Requirements.Imports" minOccurs="0" maxOccurs="unbounded">
            <xs:annotation>
              <xs:documentation xml:lang="en">Points to requirements defined elsewhere that have the same force as if they were defined in this instance.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="reference" minOccurs="0" maxOccurs="unbounded" type="url">
            <xs:annotation>
              <xs:documentation xml:lang="en">A reference to another artifact that created this set of requirements. This could be a profile, etc., or external regulation, or business requirements expressed elsewhere. This URI is intended to point to a specific web page for an artifact, not a canonical URL.  If pointing to HL7 specifications, it is best to point to the version-specific URL.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="actor" type="Requirements.Actor" minOccurs="0" maxOccurs="unbounded">
            <xs:annotation>
              <xs:documentation xml:lang="en">An actor these requirements are in regard to.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="statement" type="Requirements.Statement" minOccurs="0" maxOccurs="unbounded">
            <xs:annotation>
              <xs:documentation xml:lang="en">The actual statement of conformance requirement.</xs:documentation>
           </xs:annotation>
          </xs:element>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:complexType name="Requirements.Imports">
    <xs:annotation>
      <xs:documentation xml:lang="en">A set of requirements - a list of features or behaviors of designed systems that are necessary to achieve organizational or regulatory goals.</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="BackboneElement">
        <xs:sequence>
          <xs:element name="reference" minOccurs="1" maxOccurs="1" type="canonical">
            <xs:annotation>
              <xs:documentation xml:lang="en">The canonical for the Requirements resource to import statements from.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="key" minOccurs="0" maxOccurs="unbounded" type="id">
            <xs:annotation>
              <xs:documentation xml:lang="en">The key of a statement to treat as part of the set of requirements defined in this instance.</xs:documentation>
           </xs:annotation>
          </xs:element>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:complexType name="Requirements.Actor">
    <xs:annotation>
      <xs:documentation xml:lang="en">A set of requirements - a list of features or behaviors of designed systems that are necessary to achieve organizational or regulatory goals.</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="BackboneElement">
        <xs:sequence>
          <xs:element name="reference" minOccurs="1" maxOccurs="1" type="canonical">
            <xs:annotation>
              <xs:documentation xml:lang="en">The canonical for an actor relevant to some of the requirements.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="key" minOccurs="0" maxOccurs="1" type="id">
            <xs:annotation>
              <xs:documentation xml:lang="en">A unique string used to reference the actor from specific requirements.</xs:documentation>
           </xs:annotation>
          </xs:element>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:complexType name="Requirements.Statement">
    <xs:annotation>
      <xs:documentation xml:lang="en">A set of requirements - a list of features or behaviors of designed systems that are necessary to achieve organizational or regulatory goals.</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="BackboneElement">
        <xs:sequence>
          <xs:element name="key" minOccurs="1" maxOccurs="1" type="id">
            <xs:annotation>
              <xs:documentation xml:lang="en">Key that identifies this statement (unique within this resource).</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="label" minOccurs="0" maxOccurs="1" type="string">
            <xs:annotation>
              <xs:documentation xml:lang="en">A short human usable label for this statement.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="conformance" minOccurs="0" maxOccurs="unbounded" type="ConformanceExpectation">
            <xs:annotation>
              <xs:documentation xml:lang="en">A short human usable label for this statement.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="conditionality" minOccurs="0" maxOccurs="1" type="boolean">
            <xs:annotation>
              <xs:documentation xml:lang="en">This boolean flag is set to true of the text of the requirement is conditional on something e.g. it includes language like 'if x then y'. This conditionality flag is introduced for purposes of filtering and colour highlighting etc.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="requirement" minOccurs="1" maxOccurs="1" type="markdown">
            <xs:annotation>
              <xs:documentation xml:lang="en">The actual requirement for human consumption.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="category" minOccurs="0" maxOccurs="unbounded" type="Coding">
            <xs:annotation>
              <xs:documentation xml:lang="en">Categorization might be done automatically (inferred by code) or manually by user assertion. The absence of a category may limit the ability to determine when the element should be handled, so strong consideration should be given to how systems will be able to determine category values for legacy data and how data that cannot be categorized will be handled. As well, some categories might not be mutually exclusive, so systems should prepare for multiple declared categories - even within a single category 'axis'.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="derivedFrom" type="Requirements.DerivedFrom" minOccurs="0" maxOccurs="1">
            <xs:annotation>
              <xs:documentation xml:lang="en">Indicates that this statement is refining, tightening, or establishing more context for the referenced requirement/statement.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="partOf" type="Requirements.PartOf" minOccurs="0" maxOccurs="1">
            <xs:annotation>
              <xs:documentation xml:lang="en">Identifies a higher-level requirement or statement which this referencing statement is a logical sub-requirement of.  I.e. This statement is a necessary step to achieving the referenced requirement/statement.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="satisfiedBy" minOccurs="0" maxOccurs="unbounded" type="url">
            <xs:annotation>
              <xs:documentation xml:lang="en">A reference to another artifact that satisfies this requirement. This could be a profile, extension, or an element in one of those, or a CapabilityStatement, OperationDefinition, SearchParameter, CodeSystem(/code), ValueSet, Library etc.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="reference" minOccurs="0" maxOccurs="unbounded" type="url">
            <xs:annotation>
              <xs:documentation xml:lang="en">A reference to another artifact that created this requirement. This could be a profile, etc., or external regulation, or business requirements expressed elsewhere. This URI is intended to point to a specific web page for an artifact, not a canonical URL.  If pointing to HL7 specifications, it is best to point to the version-specific URL.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="source" minOccurs="0" maxOccurs="unbounded" type="Reference">
            <xs:annotation>
              <xs:documentation xml:lang="en">Who asked for this statement to be a requirement. By default, it's assumed that the publisher knows who it is if it matters.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="actor" minOccurs="0" maxOccurs="unbounded" type="id">
            <xs:annotation>
              <xs:documentation xml:lang="en">A reference to the key of an actor listed in Requirements.actor that is relevant to this requirement statement.</xs:documentation>
           </xs:annotation>
          </xs:element>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:complexType name="Requirements.DerivedFrom">
    <xs:annotation>
      <xs:documentation xml:lang="en">A set of requirements - a list of features or behaviors of designed systems that are necessary to achieve organizational or regulatory goals.</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="BackboneElement">
        <xs:sequence>
          <xs:element name="reference" minOccurs="0" maxOccurs="1" type="canonical">
            <xs:annotation>
              <xs:documentation xml:lang="en">The canonical of the Requirements instance this statement is derivedFrom.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="key" minOccurs="1" maxOccurs="1" type="id">
            <xs:annotation>
              <xs:documentation xml:lang="en">The key, either within this resource or the specified Requirements resource this statement is derivedFrom.</xs:documentation>
           </xs:annotation>
          </xs:element>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:complexType name="Requirements.PartOf">
    <xs:annotation>
      <xs:documentation xml:lang="en">A set of requirements - a list of features or behaviors of designed systems that are necessary to achieve organizational or regulatory goals.</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="BackboneElement">
        <xs:sequence>
          <xs:element name="reference" minOccurs="0" maxOccurs="1" type="canonical">
            <xs:annotation>
              <xs:documentation xml:lang="en">The canonical of the Requirements instance this statement is a part of.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="key" minOccurs="1" maxOccurs="1" type="id">
            <xs:annotation>
              <xs:documentation xml:lang="en">The key, either within this resource or the specified Requirements resource this statement is a part of.</xs:documentation>
           </xs:annotation>
          </xs:element>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:simpleType name="ConformanceExpectationEnum">
    <xs:restriction base="code-primitive">
      <xs:enumeration value="SHALL">
        <xs:annotation>
          <xs:documentation xml:lang="en">SHALL</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="SHOULD">
        <xs:annotation>
          <xs:documentation xml:lang="en">SHOULD</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="MAY">
        <xs:annotation>
          <xs:documentation xml:lang="en">MAY</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="SHOULD-NOT">
        <xs:annotation>
          <xs:documentation xml:lang="en">SHOULD-NOT</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="SHALL-NOT">
        <xs:annotation>
          <xs:documentation xml:lang="en">SHALL-NOT</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
    </xs:restriction>
  </xs:simpleType>
  <xs:complexType name="ConformanceExpectation">
    <xs:annotation>
      <xs:documentation xml:lang="en"></xs:documentation>
      <xs:documentation xml:lang="en">If the element is present, it must have either a @value, an @id, or extensions</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="Element">
        <xs:attribute name="value" type="ConformanceExpectationEnum" use="optional"/>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
</xs:schema>
