<program name="fundref" xmlns="http://www.crossref.org/fundingdata5.4.0.xsd">
  <assertion name="" provider="publisher">{0,unbounded}</assertion>
</program>

<xsd:element name="program">
  <xsd:annotation>
    <xsd:documentation>Information about registering funding data is available in our documentation: http://www.crossref.org/documentation/funder-registry/funding-data-deposits/</xsd:documentation>
  </xsd:annotation>
  <xsd:complexType>
    <xsd:sequence>
      <xsd:element ref="assertion" minOccurs="0" maxOccurs="unbounded"/>
    </xsd:sequence>
    <xsd:attribute name="name" type="xsd:string" fixed="fundref"/>
  </xsd:complexType>
</xsd:element>

<assertion name="" provider="publisher" xmlns="http://www.crossref.org/fundingdata5.4.0.xsd">
  <assertion name="" provider="publisher">{0,unbounded}</assertion>
</assertion>

<xsd:element name="assertion">
  <xsd:annotation>
    <xsd:documentation>Funding data attributes included in assertion are: * fundgroup: used to group funding info for items with multiple funding sources. Required for items with multiple award_number assertions, optional for items with a single award_number * funder_identifier: funding agency identifier, must be nested within the funder_name assertion * ror: ROR ID of a funder * funder_name: name of the funding agency (required) * award_number: grant number or other fund identifier</xsd:documentation>
  </xsd:annotation>
  <xsd:complexType mixed="true">
    <xsd:sequence>
      <xsd:element ref="assertion" minOccurs="0" maxOccurs="unbounded"/>
    </xsd:sequence>
    <xsd:attribute name="provider" default="publisher">
      <xsd:simpleType>
        <xsd:restriction base="xsd:NMTOKEN">
          <xsd:enumeration value="publisher"/>
          <xsd:enumeration value="crossref"/>
        </xsd:restriction>
      </xsd:simpleType>
    </xsd:attribute>
    <xsd:attribute name="name" use="required">
      <xsd:simpleType>
        <xsd:restriction base="xsd:NMTOKEN">
          <xsd:enumeration value="fundgroup"/>
          <xsd:enumeration value="funder_identifier"/>
          <xsd:enumeration value="ror"/>
          <xsd:enumeration value="funder_name"/>
          <xsd:enumeration value="award_number"/>
          <!--<xsd:enumeration value="grant_doi"/>  -->
        </xsd:restriction>
      </xsd:simpleType>
    </xsd:attribute>
  </xsd:complexType>
</xsd:element>