<xs:simpleType name="PartyRoleCode">
  <xs:restriction base="xs:token">
    <!-- Capital-case values -->
    <xs:pattern value="Buyer"/>
    <xs:pattern value="Recipient"/>
    <xs:pattern value="Delivery"/>
    <xs:pattern value="Order"/>
    <xs:pattern value="Invoicee"/>
    <xs:pattern value="Payer"/>
    <xs:pattern value="Supplier"/>
    <xs:pattern value="Seller"/>
    <xs:pattern value="Invoicing"/>
    <xs:pattern value="Warehouse"/>
    <xs:pattern value="Despatch"/>
    <xs:pattern value="Transport"/>
    <xs:pattern value="PayTo"/>
    <xs:pattern value="ManufacturerParty"/>
    <xs:pattern value="AssortmentFeeParty"/>
    <xs:pattern value="CampaignFeeParty"/>
  </xs:restriction>
</xs:simpleType>