message previewWorkItemRequest
parts 
request
element dto:previewWorkItemRequest
used by 
Operation previewWorkItem in PortType WorkPresentationService
source 
<wsdl:message name="previewWorkItemRequest">
  <wsdl:part name="request" element="dto:previewWorkItemRequest"/>
</wsdl:message>

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