How To Fix /SAPAPO/MA773 - MLR error 1: Number of table rows not equal to predefined value

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MA -

• Message number: 773

• Message text: MLR error 1: Number of table rows not equal to predefined value

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MA773 - MLR error 1: Number of table rows not equal to predefined value ?

  The SAP error message /SAPAPO/MA773 MLR error 1: Number of table rows not equal to predefined value typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is a mismatch in the expected number of rows in a table during a Multi-Level Resource (MLR) planning run. This error can arise due to various reasons, including data inconsistencies, configuration issues, or problems with the planning run itself.
  Causes:
  
  Data Inconsistencies: There may be inconsistencies in the master data or transaction data that lead to an unexpected number of rows being processed.
  Configuration Issues: Incorrect configuration settings in the APO system can lead to discrepancies in the expected data structure.
  Planning Object Structure: The planning object structure may not be correctly defined, leading to a mismatch in the expected number of rows.
  Custom Code or Enhancements: If there are custom developments or enhancements in the planning process, they may not be handling data correctly, leading to this error.
  
  Solutions:
  
  Check Master Data: Verify the master data (e.g., materials, resources, and locations) to ensure that it is complete and consistent. Look for any missing or incorrect entries.
  Review Configuration: Check the configuration settings in the APO system, particularly those related to the planning area and planning object structures. Ensure that they are set up correctly.
  Analyze the Planning Run: Review the logs and details of the planning run that triggered the error. Look for any anomalies or unexpected behavior in the data being processed.
  Debugging: If you have access to the development environment, consider debugging the planning run to identify where the mismatch occurs. This may involve checking the code that processes the data.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that resolve known issues.
  Consult Documentation: Review the SAP documentation related to MLR planning and the specific error message for additional insights and troubleshooting steps.
  
  Related Information:
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including the context in which it occurred and any relevant logs.
  Community Forums: Engage with SAP community forums or user groups where other users may have encountered similar issues. They may provide insights or solutions based on their experiences.
  Testing Environment: If possible, replicate the issue in a testing environment to better understand the cause without impacting production data.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.