parul,
Basically you have set the service input signature as bizdocEnvelope(specification)this exist in WmTN Pacakge of wm.tn.doc folder and look for the above specification.So when TN rule invokes this processing service the bizdoc object will be in the pipeline then map bizdoc/content(bytes) and convert this using bytesToString(gives xmlstring).further steps are
XMLStringToDocument(gives XML Node)
DocumentToXMLNode(thsi parses the Node to Document(XML document)
Map to your canonical document as per your requirement using XSLT transformation services (WmXSLT adapter) etc…
Check the documentation for how to use of above basic services.
HTH,
RMG
#webMethods#Integration-Server-and-ESB#Flow-and-Java-services