How To Fix PAK639 - Calculation of usage structure is not yet completed

SAP Error Message - Details

• Message type: E = Error

• Message class: PAK - Package API / Package Tools

• Message number: 639

• Message text: Calculation of usage structure is not yet completed

Self-Explanatory Message

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• What is the cause and solution for SAP error message PAK639 - Calculation of usage structure is not yet completed ?

  The SAP error message PAK639, which states "Calculation of usage structure is not yet completed," typically occurs in the context of SAP's Production Planning (PP) or Advanced Planning and Optimization (APO) modules. This error indicates that the system is trying to access or utilize a usage structure that has not yet been fully calculated or processed.
  Causes:
  
  Incomplete Calculation: The usage structure for a particular planning object (like a product or a production order) has not been fully calculated. This can happen if the calculation process was interrupted or if it is still running.
  Background Job Issues: If the calculation is supposed to be done in the background, there may be issues with the background job that is responsible for this calculation.
  Data Locking: There may be data locking issues where another process is currently using the data, preventing the calculation from completing.
  Configuration Issues: Incorrect configuration settings in the planning area or usage structure settings can lead to this error.
  
  Solutions:
  
  Check Calculation Status: Verify if the calculation for the usage structure is still in progress. You can do this by checking the relevant transaction codes (like /SAPAPO/MC62 for APO) to see if the calculation is still running.
  Re-run Calculation: If the calculation has failed or was interrupted, you may need to re-run the calculation manually. This can often be done through the relevant transaction or program.
  Check Background Jobs: Use transaction code SM37 to check the status of background jobs. Look for any jobs related to the calculation of the usage structure and see if they have completed successfully.
  Data Locking: If data locking is the issue, you may need to wait for the other process to complete or resolve any locking issues.
  Review Configuration: Check the configuration settings for the planning area and usage structure to ensure they are set up correctly. This may involve consulting with your SAP Basis or configuration team.
  Consult SAP Notes: Look for any relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MC62, SM37, and others that may help in monitoring and managing the calculation processes.
  SAP Documentation: Review SAP documentation related to the specific module you are working with (PP, APO, etc.) for more detailed guidance on usage structures and calculations.
  Support: If the issue persists, consider reaching out to SAP support or your internal SAP support team for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the PAK639 error effectively.