How To Fix 1M144 - No customer function module defined

SAP Error Message - Details

• Message type: E = Error

• Message class: 1M - BKK: Abschluß

• Message number: 144

• Message text: No customer function module defined

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 1M144 - No customer function module defined ?

  The SAP error message 1M144: No customer function module defined typically occurs when a custom function module that is expected to be defined in the system is missing. This error is often encountered in scenarios involving enhancements, user exits, or custom developments where a specific function module is expected to be called but has not been created or properly configured.
  Cause:
  
  Missing Function Module: The function module that is supposed to be called does not exist in the system.
  Incorrect Configuration: The configuration settings may point to a function module that is either incorrectly named or not activated.
  Transport Issues: If the function module was recently transported from another system, it may not have been included in the transport request or may not have been activated properly.
  Development Errors: There may be errors in the custom development that prevent the function module from being recognized.
  
  Solution:
  
  Check for Existence: Verify if the function module exists in the system. You can do this by navigating to transaction code SE37 (Function Builder) and searching for the function module.
  Create the Function Module: If the function module does not exist, you will need to create it. Ensure that it is implemented correctly according to the requirements of the program or enhancement.
  Check Configuration: Review the configuration settings where the function module is referenced. Ensure that the correct name is being used and that it is properly configured.
  Activate the Function Module: If the function module exists but is not activated, activate it in SE37.
  Transport Requests: If the function module was recently transported, check the transport logs to ensure it was transported successfully and that there were no errors during the transport process.
  Debugging: If you have access to debugging tools, you can set breakpoints to see where the error is being triggered and gather more context about the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review any documentation related to the custom development or enhancement that is causing the error. This may provide insights into what the expected function module should be.
  Community Forums: Consider searching or posting on SAP community forums or platforms like SAP Community, Stack Overflow, or other SAP-related discussion boards for additional insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.