How To Fix DMC_RT_GEN118 - Function module &1 of function group &2 for migr.object &3 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_GEN - DMC: Nachrichten der Generierungfunktionen

• Message number: 118

• Message text: Function module &1 of function group &2 for migr.object &3 already exists

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_RT_GEN118 - Function module &1 of function group &2 for migr.object &3 already exists ?

  The SAP error message DMC_RT_GEN118 indicates that there is an attempt to create or register a function module that already exists in the system for a specific migration object. This typically occurs during data migration processes, such as when using the SAP Data Migration Cockpit or other tools that involve the creation of function modules for data handling.
  Cause:
  The error is caused by the following scenarios:
  
  Duplicate Function Module: The function module specified in the error message already exists in the SAP system for the given migration object.
  Incorrect Configuration: There may be a misconfiguration in the migration settings or parameters that leads to the system trying to create a function module that is already present.
  Previous Migration Attempts: If a previous migration attempt was not completed successfully, it might have left behind function modules that are now causing conflicts.
  
  Solution:
  To resolve the DMC_RT_GEN118 error, you can take the following steps:
  
  
  Check Existing Function Modules:
  
  Use transaction SE37 or SE80 to check if the function module mentioned in the error message already exists.
  If it does exist, verify if it is the correct version and if it is functioning as expected.
  
  
  
  Delete or Rename the Existing Function Module:
  
  If the existing function module is not needed, you can delete it or rename it to avoid conflicts.
  Be cautious with this step, as deleting or renaming function modules can affect other processes or functionalities.
  
  
  
  Review Migration Object Configuration:
  
  Check the configuration settings for the migration object in the Data Migration Cockpit or the relevant tool you are using.
  Ensure that there are no duplicate entries or misconfigurations that could lead to the creation of the same function module.
  
  
  
  Restart the Migration Process:
  
  After resolving the conflict, restart the migration process to see if the error persists.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: SE37 (Function Builder), SE80 (Object Navigator)
  Migration Tools: SAP Data Migration Cockpit, LSMW (Legacy System Migration Workbench)
  SAP Notes: Always check for specific SAP Notes related to your version of SAP and the migration tools you are using, as they may contain fixes or workarounds for known issues.
  
  By following these steps, you should be able to resolve the DMC_RT_GEN118 error and continue with your data migration process.