How To Fix VR121 - Enter unit of weight

SAP Error Message - Details

• Message type: E = Error

• Message class: VR - Output for SD Reporting

• Message number: 121

• Message text: Enter unit of weight

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message VR121 - Enter unit of weight ?

  SAP Error Message:
  
  VR121 - Enter unit of weight
  
  Cause:
  This error occurs when a transaction or process in SAP requires the entry of a unit of weight, but the field is either left blank or the entered unit is not recognized or valid. Typically, this happens during goods movements, material master maintenance, or sales documents where weight information is mandatory.
  
  Explanation:
  
  The system expects a valid unit of weight (e.g., KG for kilograms, LB for pounds) to be entered.
  The unit of weight is essential for calculations related to shipping, inventory management, or pricing.
  If the unit is missing or incorrect, SAP cannot proceed and throws the VR121 error.
  
  
  Solution:
  
  
  Enter a valid unit of weight:
  
  Check the field where the unit of weight is required.
  Enter a valid unit of weight as per the SAP standard units (e.g., KG, G, LB).
  
  
  
  Check Material Master Data:
  
  Go to transaction MM03 (Display Material).
  Verify the Base Unit of Measure and Weight Unit fields under the Basic Data or Additional Data tab.
  Ensure that the unit of weight is maintained correctly.
  
  
  
  Maintain Units of Measure in Customizing:
  
  Use transaction CUNI or navigate via SPRO:
  
  Logistics ? General ? Units of Measure ? Define Units of Measure
  
  
  Verify that the unit of weight you want to use is defined and active.
  
  
  
  Check the Document or Transaction Screen:
  
  If the error occurs during document creation (e.g., delivery, sales order), ensure that the weight unit is entered or defaulted correctly.
  Sometimes, the weight unit is derived from the material master or customer/vendor master; verify these master records.
  
  
  
  User Input:
  
  If the field is user input, instruct users to always enter the unit of weight when prompted.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  MM01/MM02/MM03 – Material Master Maintenance
  VL01N/VL02N – Create/Change Delivery
  VA01/VA02 – Create/Change Sales Order
  CUNI – Units of Measure Customizing
  
  
  
  Tables:
  
  T006 – Units of Measure
  MARA – General Material Data (contains base unit of measure)
  MARM – Units of Measure for Material
  
  
  
  Notes:
  
  Ensure consistency between the unit of weight and the unit of measure for quantity.
  If custom units are used, they must be properly defined in SAP customizing.
  
  
  
  
  Summary:
  VR121 - Enter unit of weight means SAP requires a valid unit of weight entry. To resolve, enter a valid unit of weight, verify material master data, and ensure units of measure are properly configured in the system.