How To Fix /SCMB/MC_PB_DEF169 - Calculation run &1 failed; NLQ calculation wasn't possible

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMB/MC_PB_DEF -

• Message number: 169

• Message text: Calculation run &1 failed; NLQ calculation wasn't possible

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 /SCMB/MC_PB_DEF169 - Calculation run &1 failed; NLQ calculation wasn't possible ?

  The SAP error message /SCMB/MC_PB_DEF169 Calculation run &1 failed; NLQ calculation wasn't possible typically occurs in the context of SAP Advanced Planning and Optimization (APO) or Supply Chain Management (SCM) when there is an issue with the calculation run for a planning scenario. The NLQ (Network Load Quantity) calculation is a part of the planning process that helps in determining the load on resources in a network.
  Causes:
  
  Data Issues: Missing or incorrect master data (e.g., resources, locations, products) can lead to calculation failures.
  Configuration Problems: Incorrect settings in the planning area or planning book can cause the NLQ calculation to fail.
  Resource Availability: If the resources required for the calculation are not available or are incorrectly defined, it can lead to this error.
  Locks or Conflicts: If another process is locking the data or if there are conflicts in the planning run, it may prevent the NLQ calculation from completing.
  Technical Issues: Bugs or issues in the SAP system itself, such as memory issues or performance bottlenecks, can also lead to this error.
  
  Solutions:
  
  Check Master Data: Ensure that all relevant master data is complete and correctly configured. This includes checking resources, locations, and product definitions.
  Review Configuration: Verify the settings in the planning area and planning book. Ensure that the NLQ calculation is properly configured.
  Resource Availability: Check the availability of resources and ensure they are correctly defined in the system.
  Monitor Locks: Use transaction codes like SM12 to check for locks on the relevant tables and resolve any conflicts.
  Run in Background: If the calculation is resource-intensive, try running it in the background to see if it completes successfully.
  Check Logs: Review the application logs (transaction SLG1) for more detailed error messages that can provide insights into what went wrong.
  System Performance: Monitor system performance and check for any memory issues or performance bottlenecks that may be affecting the calculation run.
  Consult SAP Notes: Look for relevant SAP Notes that may address known issues or bugs related to this error message.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SCMB/MC_PB for planning book maintenance, and SLG1 for application logs.
  SAP Documentation: Refer to SAP Help documentation for detailed information on NLQ calculations and planning area configurations.
  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 necessary to involve your SAP Basis or technical team for further investigation or to contact SAP support for assistance.