We have requirement were we need to capture the calls based on the strings in the response payload/content of the webservice call.
We have Java agents on our Application server which triggers the WS call to a third party payment service and receives the WS call response. In this scenario is it possible to capture the content of the WS response call ? As we need to know in case of a 200 response from the Third Party to check if its "ACCEPTED" or "DENIED"
No you cannot capture service or request payload in AppMon - implementing that would introduce too much overhead. In general you would get information like this by using custom sensors on a method at the code level that uses this data instead of pulling it from the payload itself. I've had folks add methods just to get data like this in cases where such a method wasn't already in place.