<xs:element name="output" type="tns:output_type" maxOccurs="1" />
<xs:element name="success" type="xs:boolean" minOccurs="0" maxOccurs="1" />
</xs:all>
+ <xs:attribute name="schemaVersion" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
</xs:schema>