How To Fix TN629 - Target system ID &1 does not match local system ID &2

SAP Error Message - Details

• Message type: E = Error

• Message class: TN - Support Package Manager (SPAM) Messages

• Message number: 629

• Message text: Target system ID &1 does not match local system ID &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message TN629 - Target system ID &1 does not match local system ID &2 ?

  The SAP error message TN629 indicates a mismatch between the target system ID and the local system ID during a communication attempt, typically in the context of RFC (Remote Function Call) or ALE (Application Link Enabling) communications. Here’s a breakdown of the cause, solution, and related information for this error:
  Cause:
  
  System ID Mismatch: The error occurs when the system ID of the target system (the system you are trying to connect to) does not match the local system ID (the system you are currently in). This can happen if:
  
  The target system is incorrectly configured in the RFC destination.
  The system ID has been changed or is not correctly set up in the SAP system.
  There is a misconfiguration in the logical system settings.
  
  
  
  Solution:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 (RFC Destinations).
  Find the RFC destination that you are trying to use and check its configuration.
  Ensure that the target system ID specified in the RFC destination matches the actual system ID of the target SAP system.
  
  
  
  Verify Logical System Configuration:
  
  Go to transaction SALE (for ALE configuration) or SCC4 (for client settings).
  Check the logical system names and ensure they are correctly defined and match the system IDs.
  
  
  
  Update System ID:
  
  If the system ID has changed, you may need to update the relevant configurations in the SAP system to reflect the new system ID.
  This may involve updating the logical system name in the ALE configuration or adjusting the RFC destination settings.
  
  
  
  Check Transport Routes:
  
  If this error occurs during transport requests, ensure that the transport routes are correctly set up and that the target system is correctly defined in the transport landscape.
  
  
  
  Testing:
  
  After making the necessary changes, test the connection again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: Manage RFC destinations.
  SALE: ALE configuration.
  SCC4: Client administration.
  
  
  
  System ID Format: The system ID is typically a three-character identifier that uniquely identifies an SAP system within a landscape.
  
  
  Documentation: Refer to SAP Help documentation for more details on configuring RFC destinations and logical systems.
  
  
  Logs and Traces: If the issue persists, check the system logs (transaction SM21) and traces (transaction ST01) for more detailed error messages that may provide additional context.
  
  
  By following these steps, you should be able to resolve the TN629 error and ensure proper communication between your SAP systems.