How To Fix 88184 - Unit of measure &1 is not valid for item category &2

SAP Error Message - Details

• Message type: E = Error

• Message class: 88 - REA Processing

• Message number: 184

• Message text: Unit of measure &1 is not valid for item category &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 88184 - Unit of measure &1 is not valid for item category &2 ?

  The SAP error message 88184, which states "Unit of measure &1 is not valid for item category &2," typically occurs during the processing of a sales document, purchase order, or inventory management transaction. This error indicates that the unit of measure (UoM) specified for a particular item is not valid for the item category being used.
  Cause:
  
  Incorrect Unit of Measure: The unit of measure entered for the item does not match the allowed units for the specified item category in the system.
  Configuration Issues: The item category may not be properly configured to accept the specified unit of measure.
  Master Data Issues: The material master data may not have the correct unit of measure settings for the item category in question.
  Transaction Type Restrictions: Certain item categories may have restrictions on the units of measure that can be used.
  
  Solution:
  
  
  Check the Unit of Measure:
  
  Verify that the unit of measure you are trying to use is valid for the item category. You can do this by checking the configuration in the SAP system.
  
  
  
  Review Item Category Configuration:
  
  Go to the configuration settings for the item category in transaction code OVAH (for sales) or OMD1 (for purchasing) and check the allowed units of measure.
  Ensure that the unit of measure you are trying to use is included in the allowed list for that item category.
  
  
  
  Check Material Master Data:
  
  Use transaction code MM03 to display the material master data and check the unit of measure settings.
  Ensure that the base unit of measure and any alternative units of measure are correctly defined.
  
  
  
  Adjust Transaction Settings:
  
  If the error occurs during a specific transaction, review the transaction settings to ensure that the correct item category and unit of measure are being used.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific details on the item category and unit of measure settings.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting SAP Notes for any known issues related to this error.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  MM03 - Display Material Master
  OVAH - Maintain Item Categories (Sales)
  OMD1 - Maintain Item Categories (Purchasing)
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to this error message.
  
  
  User Exits and Enhancements: If custom logic is involved, check for any user exits or enhancements that may affect the processing of item categories and units of measure.
  
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.