How To Fix /VSO/R_MSG028 - Error converting the quantity of material &1 to unit &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /VSO/R_MSG -

• Message number: 028

• Message text: Error converting the quantity of material &1 to unit &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /VSO/R_MSG028 - Error converting the quantity of material &1 to unit &2 ?

  The SAP error message /VSO/R_MSG028 indicates that there is an issue with converting the quantity of a material from one unit of measure to another. This typically occurs in scenarios where the system is trying to process a transaction involving materials, and there is a mismatch or an issue with the unit of measure settings.
  Cause:
  
  
  Unit of Measure Configuration: The material may not have the correct unit of measure (UoM) settings in the material master. This can happen if the base unit of measure is not defined or if the conversion factors between units are missing or incorrect.
  
  
  Incorrect Quantity: The quantity being processed may not be valid for the specified unit of measure. For example, if you are trying to convert a quantity that is not compatible with the target unit of measure.
  
  
  Missing Conversion Factors: If the conversion factors between the base unit of measure and the target unit of measure are not defined in the material master, the system will not be able to perform the conversion.
  
  
  Data Entry Errors: There may be errors in the data entry, such as entering a quantity that is not valid for the specified unit of measure.
  
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03).
  Check the unit of measure settings under the "Basic Data" and "Purchasing" views.
  Ensure that the base unit of measure is correctly defined and that all necessary alternative units of measure and their conversion factors are set up correctly.
  
  
  
  Review Conversion Factors:
  
  Ensure that the conversion factors between the base unit of measure and any alternative units of measure are correctly defined.
  You can check this in the "Units of Measure" section of the material master.
  
  
  
  Validate Quantity:
  
  Ensure that the quantity being processed is valid for the specified unit of measure. If you are entering a quantity manually, double-check that it is appropriate.
  
  
  
  Check for Data Entry Errors:
  
  Review the transaction or document where the error occurred to ensure that all data has been entered correctly.
  
  
  
  Consult Documentation:
  
  If the issue persists, consult SAP documentation or reach out to your SAP support team for further assistance.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  MM03 - Display Material Master
  MM02 - Change Material Master
  MM01 - Create Material Master
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  
  Unit of Measure Settings: Familiarize yourself with how units of measure are configured in SAP, including the concept of base units and alternative units.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the /VSO/R_MSG028 error in SAP.