Thanks Suresh. The issue that I face is that , if there was a change in the WSDL and issues by the provider again. At the time of re-creation / refresh of the connection , it generates a new set of NS prefix. This makes the document change completely and developers need to redo the mapping.
P.S. - I have noticed that this is not always the case when we refresh the connector. But always when re-created.
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