How To Fix VSMI021 - Unit of measurement ISO code & is unknown

SAP Error Message - Details

• Message type: E = Error

• Message class: VSMI - Message for Development Class VSMI

• Message number: 021

• Message text: Unit of measurement ISO code & is unknown

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message VSMI021 - Unit of measurement ISO code & is unknown ?

  The SAP error message VSMI021 indicates that the unit of measurement (UoM) ISO code is unknown or not recognized in the system. This error typically arises when dealing with materials, products, or transactions that involve units of measurement that are not defined or configured correctly in the SAP system.
  Cause:
  
  Missing UoM Definition: The ISO code for the unit of measurement is not defined in the system.
  Incorrect Configuration: The unit of measurement may be incorrectly configured or not linked to the relevant material or product.
  Data Entry Error: There may be a typo or incorrect entry in the transaction or master data where the UoM is specified.
  Custom Development: If there are custom developments or enhancements, they may not be handling the UoM correctly.
  
  Solution:
  
  
  Check UoM Configuration:
  
  Go to the transaction code CUNI (Unit of Measure Conversion) to check if the UoM is defined.
  Ensure that the UoM is correctly configured and that the ISO code is valid.
  
  
  
  Define Missing UoM:
  
  If the UoM is not defined, you can create it using the transaction code CUNI or through the relevant customizing path in SPRO.
  Navigate to Logistics > General > Master Data > Units of Measure > Define Units of Measure.
  
  
  
  Verify Material Master Data:
  
  Check the material master data using transaction code MM03 to ensure that the UoM is correctly assigned to the material.
  Ensure that the UoM is valid for the specific material type and plant.
  
  
  
  Check Transaction Data:
  
  Review the transaction where the error occurred to ensure that the UoM is entered correctly.
  Look for any inconsistencies or errors in the data entry.
  
  
  
  Consult Documentation:
  
  If you are using a specific industry solution or add-on, consult the documentation to ensure that the UoM is supported.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  ISO Codes: Units of measurement are often represented by ISO codes (e.g., "KG" for kilograms, "L" for liters). Ensure that the correct ISO code is being used.
  Unit of Measure Groups: Sometimes, units of measurement are grouped. Check if the UoM belongs to a specific group that may have additional requirements.
  Custom Development: If there are custom programs or enhancements, review the code to ensure that it correctly handles UoM.
  
  By following these steps, you should be able to resolve the VSMI021 error and ensure that the unit of measurement is recognized in your SAP system.