<xsd:complexType name="RRA_O18.RESPONSE.CONTENT"> <xsd:sequence> <xsd:element ref="RRA_O18.PATIENT" minOccurs="0" maxOccurs="1" /> <xsd:element ref="RRA_O18.ORDER" minOccurs="1" maxOccurs="unbounded" /> </xsd:sequence> </xsd:complexType>