How To Fix /SCMB/LSO128 - Internal error during optimizer execution

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMB/LSO -

• Message number: 128

• Message text: Internal error during optimizer execution

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCMB/LSO128 - Internal error during optimizer execution ?

  The SAP error message /SCMB/LSO128 Internal error during optimizer execution typically occurs in the context of SAP Advanced Planning and Optimization (APO) or Supply Chain Management (SCM) when there is an issue during the execution of the optimizer. This error can be caused by various factors, including data inconsistencies, configuration issues, or problems with the optimizer itself.
  Causes:
  
  Data Inconsistencies: Missing or incorrect master data (like materials, locations, or resources) can lead to internal errors during optimization.
  Configuration Issues: Incorrect settings in the optimizer configuration or planning area can cause the optimizer to fail.
  Resource Constraints: If the optimizer cannot find a feasible solution due to resource constraints or conflicting data, it may trigger this error.
  Software Bugs: There may be bugs in the version of the software you are using, which can lead to unexpected behavior during optimization.
  Memory Issues: Insufficient memory allocation for the optimizer process can also lead to internal errors.
  
  Solutions:
  
  Check Master Data: Ensure that all relevant master data is complete and accurate. This includes checking for missing materials, locations, and resources.
  Review Configuration: Verify the configuration settings for the optimizer and planning area. Ensure that all necessary parameters are correctly set.
  Analyze Logs: Check the application logs and the optimizer logs for more detailed error messages that can provide insights into the root cause of the issue.
  Test with Simplified Data: If possible, try running the optimizer with a simplified dataset to see if the error persists. This can help isolate the problem.
  Update Software: Ensure that you are using the latest version of SAP SCM/APO. If you are on an older version, consider applying patches or updates that may address known bugs.
  Increase Memory Allocation: If memory issues are suspected, consider increasing the memory allocation for the optimizer process in the SAP system settings.
  Contact SAP Support: If the issue persists after trying the above solutions, it may be necessary to contact SAP support for further assistance. Provide them with detailed information about the error, including logs and system configuration.
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide guidance on troubleshooting.
  Community Forums: Engage with the SAP Community or other forums where users may have encountered similar issues and can share their experiences and solutions.
  Documentation: Review the official SAP documentation for the optimizer and SCM/APO to ensure that you are following best practices in configuration and execution.
  
  By systematically addressing these areas, you can often resolve the /SCMB/LSO128 Internal error during optimizer execution error and ensure smoother operation of the optimizer in your SAP environment.