COPA Account Based Problem

Dear All,

I had created two DataSource for COPA one is Cost Based and another is Account Based using T-code KEB0 in R/3 Dev. I can able to see the data in RSA3 for Cost Based but when come the Account Based it is giving "Error Occured during the extraction" (When i get into the Help -During the extraction phase an error occurred for the extractor. An exception, 'error_passed_to_mess_handler' was triggered.-).

Could any one please help me in creating of COPA Account Based, and please do help me in some notes.

Thanks in advance,

Prashanth