How To Fix /SAPAPO/MC01159 - Generation failed (repeat the operation)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MC01 -

• Message number: 159

• Message text: Generation failed (repeat the operation)

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/MC01159 - Generation failed (repeat the operation) ?

  The SAP error message /SAPAPO/MC01159 Generation failed (repeat the operation) typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an issue during the generation of a planning run, such as a heuristic or optimization run. This error can be caused by various factors, and here are some common causes, potential solutions, and related information:
  Causes:
  
  Data Issues: Missing or inconsistent master data (e.g., materials, resources, or locations) can lead to generation failures.
  Configuration Problems: Incorrect settings in the planning area or planning book can cause issues during the generation process.
  Resource Constraints: If there are not enough resources available to fulfill the planned orders, the generation may fail.
  Locking Issues: If another process is locking the data that is needed for the generation, it can lead to this error.
  Memory or Performance Issues: Insufficient memory or performance bottlenecks in the system can also lead to generation failures.
  
  Solutions:
  
  Check Master Data: Ensure that all relevant master data is complete and consistent. Verify that materials, resources, and locations are correctly set up.
  Review Configuration: Check the configuration of the planning area and planning book to ensure that they are set up correctly.
  Analyze Resource Availability: Make sure that the resources required for the planning run are available and not over-allocated.
  Check for Locks: Use transaction codes like SM12 to check for any locks on the relevant data and resolve them if necessary.
  Monitor System Performance: Check system performance and memory usage. If necessary, consider optimizing the system or increasing resources.
  Re-run the Generation: Sometimes, simply re-running the generation process after addressing any identified issues can resolve the error.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/MC90 (for planning book maintenance) and /SAPAPO/MC94 (for planning area maintenance).
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address specific issues related to this error message.
  Logs and Traces: Review the application logs (transaction SLG1) and any relevant traces to gather more information about the error.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or APO support team for further investigation.