message getResourceGuidRequest
parts 
parameters
element mapping:getResourceGuid
used by 
Operation getResourceGuid in PortType MappingService
source 
<wsdl:message name="getResourceGuidRequest">
  <wsdl:part name="parameters" element="mapping:getResourceGuid"/>
</wsdl:message>

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