How to trace a call from an external client to an X++ service exposed as a Web service in Microsoft Dynamics AX. When you call the Web service, the call goes to the Web service and is then passed to the AOS. You can use tracing to capture the parameters the client sends to the Web services as well as the parameters that are sent from the Web service to the AOS.
https://msdn.microsoft.com/en-us/library/cc967372(v=ax.50).aspx
https://msdn.microsoft.com/en-us/library/cc967372(v=ax.50).aspx
