How To Fix /SAPAPO/RET_MESSAGES128 - Unit of measure not used in model mix planning

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/RET_MESSAGES -

• Message number: 128

• Message text: Unit of measure not used in model mix planning

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/RET_MESSAGES128 - Unit of measure not used in model mix planning ?

  The SAP error message /SAPAPO/RET_MESSAGES128 indicates that a unit of measure (UoM) being used in a model mix planning scenario is not recognized or not configured correctly in the system. This can occur in the context of Advanced Planning and Optimization (APO) when dealing with product planning and forecasting.
  Cause:
  
  Incorrect Unit of Measure: The unit of measure specified for a product in the planning model is not defined or not used in the model mix planning.
  Configuration Issues: The product master data may not be set up correctly, or the UoM may not be assigned to the relevant planning area.
  Data Inconsistencies: There may be inconsistencies in the master data or planning data that lead to the UoM not being recognized.
  Model Mix Planning Settings: The settings for model mix planning may not include the specified UoM.
  
  Solution:
  
  
  Check Product Master Data:
  
  Go to the product master data in SAP APO and verify that the unit of measure is correctly defined.
  Ensure that the UoM is assigned to the product in the relevant planning area.
  
  
  
  Review Planning Area Settings:
  
  Check the configuration of the planning area to ensure that the UoM is included in the model mix planning settings.
  If necessary, update the planning area to include the required UoM.
  
  
  
  Update UoM in Model Mix Planning:
  
  If the UoM is not used in the model mix planning, you may need to add it to the list of allowed UoMs in the model mix planning configuration.
  
  
  
  Data Consistency Check:
  
  Run consistency checks on the master data and planning data to identify any discrepancies that may be causing the issue.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on configuring UoMs in model mix planning.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like /SAPAPO/MAP (for model mix planning) or /SAPAPO/MDP (for master data) to access relevant settings.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on this error message.
  Training and Documentation: Consider reviewing training materials or documentation related to SAP APO and model mix planning for a deeper understanding of UoM configurations.
  
  By following these steps, you should be able to identify and resolve the issue related to the error message /SAPAPO/RET_MESSAGES128.