How To Fix /SAPAPO/MCPSH_SEL078 - Error when calling a user exit

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MCPSH_SEL -

• Message number: 078

• Message text: Error when calling a user exit

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 /SAPAPO/MCPSH_SEL078 - Error when calling a user exit ?

  The SAP error message /SAPAPO/MCPSH_SEL078 typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an issue related to a user exit during the execution of a planning function or process. This error can arise due to various reasons, including incorrect implementation of the user exit, missing data, or issues with the configuration.
  Cause:
  
  User Exit Implementation: The user exit may not be implemented correctly, leading to unexpected behavior or errors during execution.
  Data Issues: There may be missing or inconsistent data that the user exit expects to process.
  Configuration Problems: Incorrect configuration settings in the APO system can lead to this error.
  Code Errors: There might be syntax errors or logical errors in the ABAP code of the user exit.
  
  Solution:
  
  
  Check User Exit Implementation:
  
  Review the code in the user exit to ensure it is implemented correctly.
  Make sure that all necessary data is being passed to the user exit and that it is being processed correctly.
  
  
  
  Debugging:
  
  Use the ABAP debugger to step through the user exit code to identify where the error occurs.
  Check for any runtime errors or exceptions that may be raised during execution.
  
  
  
  Data Validation:
  
  Ensure that all required data is available and valid before the user exit is called.
  Check for any missing or inconsistent data that could lead to the error.
  
  
  
  Review Configuration:
  
  Verify the configuration settings related to the planning function or process that is invoking the user exit.
  Ensure that all necessary settings are correctly configured in the APO system.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific user exit to understand its expected behavior and requirements.
  
  
  
  SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide guidance on user exits in APO.
  
  
  
  Testing:
  
  After making changes, thoroughly test the user exit to ensure that it works as expected without causing further errors.
  
  
  
  Related Information:
  
  User Exits in SAP APO: User exits are custom enhancements that allow you to add your own logic to standard SAP processes. They are typically implemented in ABAP.
  Transaction Codes: You may need to use transaction codes like SE80 (Object Navigator) or SE37 (Function Module) to access and modify the user exit code.
  SAP Community: Engaging with the SAP Community or forums can provide additional insights and solutions from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.