message completeWorkItemRequest
parts 
completeWorkItemDoc
element dto:completeWorkItem
used by 
Operation completeWorkItem in PortType WorkItemManagementService
source  
<wsdl:message name="completeWorkItemRequest">
  <wsdl:part name="completeWorkItemDoc" element="dto:completeWorkItem"/>
</wsdl:message>

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