Exception:com.sap.mw.jco.JCO$Exception: (104) RFC_ERROR_SYST


I am invoking an RFC on SAP server from the Integration Server but no joy. I am getting the following error.

Exception:com.sap.mw.jco.JCO$Exception: (104) RFC_ERROR_SYSTEM_FAILURE: Port ‘’ does not exist in the table of port descriptions

The SAP adapter connection is working fine. I have applied the SP5 and the environment is,

Windows NT
Integration Server 6.1
SAP Adapter 4.6 SP5
SAP R/3 System

Any of you have had similar problems ? Your ideas /clues on this will be verymuch appreciated.


I have seen this error when the function module abend in your SAP system. You can get further information from your SAP system. Also, you can use a Sequence step that terminates on Failure and then another that terminates on Done. Inside the terminate on done sequence( Catch block ) you get use the service getLastError for more information

Sequence (Start Processing) Exit on Success
Sequence (Try Block) Exit on Failure
Make your SAP Calls
Sequence (Catch Block) Exit on Done
Error handling