<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

  <xs:element name="Process">
     <xs:complexType>
        <xs:sequence>
           <xs:element name="BillingAddress" type="ContactDetails" />
           <xs:element name="ShippingAddress" type="ContactDetails" />
        </xs:sequence>
     </xs:complexType>
  </xs:element>

  <xs:complexType name="ContactDetails">
     <xs:sequence>
        <xs:element name="Name" type="xs:string" />
        <xs:element name="Address" type="xs:string" />
        <xs:element name="City" type="xs:string" />
        <xs:element name="State" type="xs:string" />
        <xs:element name="Country" type="MyCountry" />
     </xs:sequence>
  </xs:complexType>

  <xs:simpleType name="MyCountry">
     <xs:restriction base="xs:string">
        <xs:enumeration value="USA" />
        <xs:enumeration value="UK" />
        <xs:enumeration value="Canada" />
        <xs:enumeration value="Finland" />
     </xs:restriction>
  </xs:simpleType>

</xs:schema>
