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I call a Function module (RFC ) present in BI from ECC. When this FM gets executed it throws the following error.

An error occurred when executing a Remote Function Call.

"CPIC-CALL: 'ThSAPOCMINIT' : cmRc=20 thRc=666#Error occurred in the SAP network

  interface "

Status of connection.... "CODE=CM_PRODUCT_SPECIFIC_ERROR -1 -1 SAPCODE=666

  CONV= "

Internal error code.... "RFC_IO5"

There is an error in the communication system. To clarify

and resolve the error, contact your system administrator.

Last error logged in SAP kernel

But this error occurs less frequently.Experts kindly show some lights on this problem?



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