RFC_ERROR_SYSTEM_FAILURE: An error occurred when receiving a complex parame

The ABAP FM is called from JAVA and it works fine in 4.6 C. But in ECC 6 it gives an error RFC_ERROR_SYSTEM_FAILURE: An error occurred when receiving a complex parameter.

I have keep all the interface parameters the same as in 4.6c which works without any problem .

Is this because of the interface parameters and if so how can I trace which parameter is causing this problem.