<xs:element name="priceUnits" >
  <xs:annotation>
    <xs:documentation>Example - per Pound or Per 46 KGs</xs:documentation>
  </xs:annotation>
  <xs:simpleType>
    <xs:restriction base="xs:string">
      <xs:enumeration value="46KB"/>
      <xs:enumeration value="50KB"/>
      <xs:enumeration value="LBS"/>
      <xs:enumeration value="MT"/>
    </xs:restriction>
  </xs:simpleType>
</xs:element>