<xs:attribute name="dataCollectionStage">
  <xs:annotation>
    <xs:documentation xml:lang="en">See August 2016 HMIS Data Dictionary, Section 5.3.</xs:documentation>
  </xs:annotation>
  <xs:simpleType>
    <xs:restriction base="xs:unsignedInt">
      <xs:enumeration value="1">
        <xs:annotation>
          <xs:documentation xml:lang="en">Project entry</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="2">
        <xs:annotation>
          <xs:documentation xml:lang="en">Project update</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="3">
        <xs:annotation>
          <xs:documentation xml:lang="en">Project exit</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="5">
        <xs:annotation>
          <xs:documentation xml:lang="en">Project annual assessment</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
    </xs:restriction>
  </xs:simpleType>
</xs:attribute>