<xs:attribute name="MetadataRecordIdentifierScheme">
  <xs:annotation>
    <xs:documentation xml:lang="en">The name of the scheme according to which the metadata record identifier is assigned by the authority that issues it (e.g., DOI, URL, etc.)</xs:documentation>
    <xs:appinfo>
      <identifier>http://w3id.org/meta-share/meta-share/MetadataRecordIdentifierScheme</identifier>
      <label xml:lang="en">Metadata record identifier scheme</label>
      <subclassOf>http://purl.org/spar/datacite/ResourceIdentifierScheme</subclassOf>
    </xs:appinfo>
  </xs:annotation>
  <xs:simpleType>
    <xs:restriction base="xs:anyURI">
      <xs:enumeration value="http://purl.org/spar/datacite/handle">
        <xs:annotation>
          <xs:documentation xml:lang="en">The Handle system</xs:documentation>
          <xs:appinfo>
            <identifier>http://purl.org/spar/datacite/handle</identifier>
            <label xml:lang="en">Handle</label>
          </xs:appinfo>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="http://purl.org/spar/datacite/purl">
        <xs:annotation>
          <xs:documentation xml:lang="en">Persistent Uniform Resource Locator</xs:documentation>
          <xs:appinfo>
            <identifier>http://purl.org/spar/datacite/purl</identifier>
            <label xml:lang="en">PURL</label>
          </xs:appinfo>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="http://purl.org/spar/datacite/url">
        <xs:annotation>
          <xs:documentation xml:lang="en">Uniform Resource Locator</xs:documentation>
          <xs:appinfo>
            <identifier>http://purl.org/spar/datacite/url</identifier>
            <label xml:lang="en">URL</label>
          </xs:appinfo>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="http://purl.org/spar/datacite/urn">
        <xs:annotation>
          <xs:documentation xml:lang="en">Uniform Resource Name</xs:documentation>
          <xs:appinfo>
            <identifier>http://purl.org/spar/datacite/urn</identifier>
            <label xml:lang="en">URN</label>
          </xs:appinfo>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="http://w3id.org/meta-share/meta-share/CORE">
        <xs:annotation>
          <xs:appinfo>
            <identifier>http://w3id.org/meta-share/meta-share/CORE</identifier>
            <label xml:lang="en">CORE</label>
          </xs:appinfo>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="http://w3id.org/meta-share/meta-share/OpenAIRE">
        <xs:annotation>
          <xs:appinfo>
            <identifier>http://w3id.org/meta-share/meta-share/OpenAIRE</identifier>
            <label xml:lang="en">OpenAIRE</label>
          </xs:appinfo>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="http://w3id.org/meta-share/meta-share/elg">
        <xs:annotation>
          <xs:documentation xml:lang="en">European Language Grid</xs:documentation>
          <xs:appinfo>
            <identifier>http://w3id.org/meta-share/meta-share/elg</identifier>
            <label xml:lang="en">ELG</label>
          </xs:appinfo>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="http://w3id.org/meta-share/meta-share/omtd">
        <xs:annotation>
          <xs:documentation xml:lang="en">Value for LRTIdentifierScheme referring to the identifier assigned by the OpenMinTeD platform (https://services.openminted.eu/home)</xs:documentation>
          <xs:appinfo>
            <identifier>http://w3id.org/meta-share/meta-share/omtd</identifier>
            <label xml:lang="en">OMTD</label>
          </xs:appinfo>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="http://w3id.org/meta-share/meta-share/other">
        <xs:annotation>
          <xs:appinfo>
            <identifier>http://w3id.org/meta-share/meta-share/other</identifier>
            <label xml:lang="en">other</label>
          </xs:appinfo>
        </xs:annotation>
      </xs:enumeration>
    </xs:restriction>
  </xs:simpleType>
</xs:attribute>