How To Fix CACS_SE256 - Combination of RFC destination and logical service is invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: CACS_SE - Settlement

• Message number: 256

• Message text: Combination of RFC destination and logical service is invalid

What causes this issue?

The RFC destination and the logical system represent the external system
to which the settlement must be transferred.
The RFC destination is used to check the data in the external system.
The logical system is used to specify the target system of the transfer
<DS:GLOS.3526B592AFAB52B9E10000009B38F974>IDoc</>.
Either both the RFC destination and the logical system must be specified
for <ZH>posting to an external system </>or neither.
The RFC destination and the logical system must be specified for <ZH>
posting to a local system</>.
The RFC destination is "&v1&" and the logical system is "&v2&".

System Response

The transfer of settlement was canceled.

How to fix this error?

Configure the identification of the logical target system of the
settlement "&v3&" in table TCACS_TRIGID.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CACS_SE256 - Combination of RFC destination and logical service is invalid ?

  The SAP error message CACS_SE256, which states "Combination of RFC destination and logical service is invalid," typically occurs in the context of SAP's Customer Activity Repository (CAR) or when dealing with Remote Function Calls (RFC) in SAP systems. This error indicates that there is a mismatch or misconfiguration between the RFC destination and the logical service that is being called.
  Causes:
  
  Incorrect RFC Destination: The RFC destination specified in the configuration may not be correctly set up or may not exist.
  Logical Service Not Defined: The logical service that you are trying to access may not be defined in the system or may not be correctly linked to the RFC destination.
  Authorization Issues: The user or system trying to access the logical service may not have the necessary authorizations.
  Network Issues: There may be network connectivity issues preventing the RFC call from being established.
  Configuration Errors: There may be errors in the configuration settings for the logical service or the RFC destination.
  
  Solutions:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 and verify that the RFC destination is correctly configured.
  Test the connection to ensure that it is working properly.
  
  
  
  Verify Logical Service:
  
  Ensure that the logical service you are trying to access is defined in the system.
  Check the configuration in transaction SPRO or relevant configuration transactions to ensure that the logical service is correctly linked to the RFC destination.
  
  
  
  Review Authorizations:
  
  Check the user authorizations to ensure that the user has the necessary permissions to access the logical service.
  Use transaction SU53 to analyze authorization issues after the error occurs.
  
  
  
  Check Network Connectivity:
  
  Ensure that there are no network issues preventing the RFC call from being established.
  You can use tools like ping or telnet to check connectivity to the target system.
  
  
  
  Review Configuration Settings:
  
  Go through the configuration settings for both the logical service and the RFC destination to ensure that all parameters are correctly set.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SPRO: SAP Reference IMG for configuration
  SU53: Authorization Check
  
  
  Documentation: Review SAP documentation related to the specific modules you are working with (e.g., CAR, RFC).
  SAP Community: Consider searching or posting in the SAP Community forums for additional insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to identify and resolve the cause of the CACS_SE256 error in your SAP system.