ops:refType-Type

<xs:simpleType name="refType-Type">
  <xs:annotation>
    <xs:documentation>Enumeration which contains a list of all reference types supported by OPS.</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:string">
    <xs:enumeration value="publication"/>
    <xs:enumeration value="application"/>
    <xs:enumeration value="priority"/>
  </xs:restriction>
</xs:simpleType>