How To Fix ME779 - Error in quantity conversion from stockkeeping unit to order unit

SAP Error Message - Details

• Message type: E = Error

• Message class: ME - Purchasing: General Messages

• Message number: 779

• Message text: Error in quantity conversion from stockkeeping unit to order unit

Self-Explanatory Message

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• What is the cause and solution for SAP error message ME779 - Error in quantity conversion from stockkeeping unit to order unit ?

  The SAP error message ME779, which states "Error in quantity conversion from stockkeeping unit to order unit," typically occurs during the processing of purchase orders, goods movements, or inventory management when there is an issue with the conversion of quantities between different units of measure (UoM). This can happen in various scenarios, such as when you are trying to convert stockkeeping units (SKU) to order units (OU) and the system cannot perform the conversion due to configuration or data issues.
  Causes of ME779 Error
  
  
  Unit of Measure Configuration: The units of measure for the material may not be properly defined in the material master. This includes the base unit of measure, stockkeeping unit, and order unit.
  
  
  Missing Conversion Factors: There may be missing or incorrect conversion factors between the stockkeeping unit and the order unit in the material master.
  
  
  Inconsistent Data: The data in the material master may be inconsistent or incomplete, leading to issues during quantity conversion.
  
  
  Incorrect Material Type: The material type may not support the required unit of measure conversions.
  
  
  Batch Management Issues: If batch management is enabled, there may be issues with batch-specific units of measure.
  
  
  Solutions to ME779 Error
  
  
  Check Material Master Data:
  
  Go to the material master (transaction code MM03) and check the units of measure defined for the material.
  Ensure that the base unit of measure, stockkeeping unit, and order unit are correctly defined and that conversion factors are set up properly.
  
  
  
  Define Conversion Factors:
  
  If conversion factors are missing, you can define them in the material master under the "Units of Measure" view. Make sure that the conversion from stockkeeping unit to order unit is specified.
  
  
  
  Review Material Type Settings:
  
  Ensure that the material type allows for the required unit of measure conversions. You may need to consult with your SAP configuration team if changes are needed.
  
  
  
  Check for Batch Management:
  
  If batch management is enabled, ensure that the batches are correctly set up with the appropriate units of measure.
  
  
  
  Test with Different Scenarios:
  
  Try creating a test purchase order or goods movement with different quantities and units of measure to see if the error persists. This can help identify if the issue is specific to certain data.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  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: 
  
  MM03 (Display Material Master)
  ME21N (Create Purchase Order)
  MIGO (Goods Movement)
  
  
  
  Documentation: Review SAP documentation related to material management and unit of measure handling for more detailed guidance.
  
  
  User Exits and BAdIs: If custom logic is involved in the conversion process, check for any user exits or BAdIs that may be affecting the behavior.
  
  
  By following these steps, you should be able to identify and resolve the ME779 error in SAP.