<xs:simpleType name="exportDirective">
  <xs:restriction base="xs:string">
    <xs:enumeration value="deltaRefresh">
      <xs:annotation>
        <xs:documentation xml:lang="en">The data contained in this file is meant to be synchronized with an existing data set.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="fullRefresh">
      <xs:annotation>
        <xs:documentation xml:lang="en">The data contained in this file is meant to replace an existing data set for the export period.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="other">
      <xs:annotation>
        <xs:documentation xml:lang="en">The data contained in this file were selected based upon parameters mutually agreed upon by the sender and recipient of the XML data.</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>