HOW TO GET FAULT MESSAGE EXCEPTION BACK IN RESPONSE FOR IDOC

Dear Experts,

I am doing an development for IDOC-->SOAP synchronous scenerio.For acheiving this i am using ccBPM and its working.

But the requirement is to get the fault exception given  by the web service as a response when we are sending improper data.

As per my knowledge we can map the fault message exception coming from the web service to BAPI but not possible for IDOC because we cannot select the fault message as IDOC in the operational mapping.

Please suggest me to achieve the requirement.

Your suggestions are highly appreciable.

Thanks in advance

Best Regards,

Venkat