documentStatus

<xs:attribute name="documentStatus" use="required">
  <xs:simpleType>
    <xs:restriction base="xs:NMTOKEN">
      <xs:enumeration value="deliveryReady"/>
      <xs:enumeration value="customerFailed"/>
      <xs:enumeration value="deliveryFailed"/>
      <xs:enumeration value="deliveryDelayed"/>
      <xs:enumeration value="customerReceived"/>
      <xs:enumeration value="customerConfirmed"/>
      <xs:enumeration value="deliverySuccessful"/>
    </xs:restriction>
  </xs:simpleType>
</xs:attribute>