Calling a C program as an RFC from SAP : VERY URGENT

Hi All,
I have got a SAP program which is trying to call a C program on the UNIX server of the SAP system. I have created the RFC destination in SM59 and have tested the connection to be working fine. inside the C program , a code has been written to create a sample file on the server. Now when i am executing the SAP program, though the file gets created, but i am getting an Exception of "SYSTEM ERROR" at the SAP side.
Can anybody help on this regard why I am getting that error?
Its very URGENT

Hi Priyanth,
I am not sure but check this out
If you are using any commands , check if that command is configured in SM69

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Calling a C program as an RFC from SAP : VERY URGENT

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