I don't understand your question exactly. When you enable trace loggign on the Webservice lognode you see all soap Envelope XMLs, both requests and responses.
When you want the response XML in your app to show to a user for instance, you could do this by calling the web service in Java. Then you are very flexible in using the request and response XML but you will need to create the request XML and the mapping of the response yourself in Java. This will take much more time than when you use the Mendix web services functionality.
Hope this helps.
Hi Nimesh,
Immediately after you called the web service (Call Web service activity), you can add the activity called: "Export XML Document". In this action you define the same XML mapping you used in the web service call and the same object you are passing to the web service call.
From the Export XML Document action you can either create a FileDocument or a string as output.