<xs:complexType name="PurchaseOrderType" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:annotation> <xs:documentation xml:lang="en">Describes the purchase order.</xs:documentation> </xs:annotation> <xs:sequence> <xs:element name="shipTo" type="USAddress"> <xs:annotation> <xs:documentation xml:lang="en">The shipping address.</xs:documentation> </xs:annotation> </xs:element> <xs:element name="billTo" type="USAddress"> <xs:annotation> <xs:documentation xml:lang="en">The billing address.</xs:documentation> </xs:annotation> </xs:element> <xs:element ref="comment" minOccurs="0" /> <xs:element name="items" type="Items"> <xs:annotation> <xs:documentation xml:lang="en">The items in the order.</xs:documentation> </xs:annotation> </xs:element> </xs:sequence> <xs:attribute name="orderDate" type="xs:date"> <xs:annotation> <xs:documentation xml:lang="en">The date of the order.</xs:documentation> </xs:annotation> </xs:attribute> </xs:complexType>