message cancelWorkItemResponse
parts 
workResponse
element dto:workResponse
used by 
Operation cancelWorkItem in PortType WorkPresentationService
source  
<wsdl:message name="cancelWorkItemResponse">
  <wsdl:part name="workResponse" element="dto:workResponse"/>
</wsdl:message>

WSDL documentation generated by XMLSpy WSDL Editor http://www.altova.com/xmlspy