<xs:simpleType name="ASAClassCodeType" >
  <xs:restriction base="xs:string">
    <xs:enumeration value="I"/>
    <xs:enumeration value="IE"/>
    <xs:enumeration value="II"/>
    <xs:enumeration value="IIE"/>
    <xs:enumeration value="III"/>
    <xs:enumeration value="IIIE"/>
    <xs:enumeration value="IV"/>
    <xs:enumeration value="IVE"/>
    <xs:enumeration value="V"/>
    <xs:enumeration value="VE"/>
    <xs:enumeration value="VI"/>
    <xs:enumeration value="VIE"/>
    <xs:enumeration value="Unknown"/>
  </xs:restriction>
</xs:simpleType>