Hi Midhun,
Are you going to use a PI or you go to connect directly the ECC with the endpoint webservice via SOAMANAGER?
Inside a PI you can set a field on the sender side to determinate with endpoint you go to use and in mapping level to map only the desired fields. I usually work with webservices with different strcutures, at least with the error responses and in mapping level you can do it without issues.
If you use somanager you can create two ports in that transaction and in ABAP level to prepare the XML's for request and response according the port to use.
should I create two service interfaces at webservices side or one service interface witht two operations
Is it possible to create one service interface with one operation at ECC and one service interface witht two operations for webservices side
what should be the best approach
Have your WS endpoint two operations?, in the case the WS endpoint was only one operation and URL, you can create one sender service interface with no operations, and to control the different messages via mapping level. If the messages depending of some characteristic in the sender payload or in the business logic (this part i didnt understand right) then you can create one sender service interface with two operations.
Hope this helps.
Regards.
Message was edited by: Iñaki Vila