<xs:element name="mixedmatchproducts" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:complexType>
    <xs:sequence>
      <xs:element maxOccurs="unbounded" name="mixedmatchproduct">
        <xs:complexType>
          <xs:sequence>
            <xs:element name="amount" type="xs:decimal" />
            <xs:element name="productbarcodes">
              <xs:complexType>
                <xs:sequence>
                  <xs:element maxOccurs="unbounded" name="productbarcode">
                    <xs:complexType>
                      <xs:attribute name="barcode" type="xs:long" use="required" />
                    </xs:complexType>
                  </xs:element>
                </xs:sequence>
              </xs:complexType>
            </xs:element>
          </xs:sequence>
          <xs:attribute name="productnumber" type="xs:long" use="required" />
        </xs:complexType>
      </xs:element>
    </xs:sequence>
  </xs:complexType>
</xs:element>