How To Fix W5064 - Unit of measure & is not an ISO code (item will not be adopted)

SAP Error Message - Details

• Message type: E = Error

• Message class: W5 - Messages for MM-WEB Applications and BAPIs

• Message number: 064

• Message text: Unit of measure & is not an ISO code (item will not be adopted)

Self-Explanatory Message

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• What is the cause and solution for SAP error message W5064 - Unit of measure & is not an ISO code (item will not be adopted) ?

  SAP Error Message:
  
  W5064 Unit of measure & is not an ISO code (item will not be adopted)
  
  Cause:
  This warning message occurs when you try to create or process a material master record or a related document in SAP, and the unit of measure (UoM) entered is not recognized as a valid ISO standard unit of measure code in the system.
  SAP expects certain units of measure to conform to ISO standards (International Organization for Standardization). If the unit of measure you enter is not part of the ISO code list maintained in SAP, the system issues this warning and does not adopt the item with that UoM.
  
  Explanation:
  
  The system checks the unit of measure against the ISO code list (table T006A).
  If the UoM is not found in this list, the system issues the warning W5064.
  The item with the non-ISO UoM will not be adopted or processed further.
  This is often encountered during material master creation, purchase order entry, or inventory transactions.
  
  
  Solution:
  
  
  Check the Unit of Measure:
  
  Verify the unit of measure you are trying to use.
  Make sure it is a valid ISO unit of measure code.
  
  
  
  Use Standard ISO Units:
  
  Use units of measure that are standard and recognized by SAP.
  You can find the list of valid ISO units in transaction CUNI or by checking table T006A.
  
  
  
  Maintain Custom Units (if necessary):
  
  If you need to use a non-standard unit of measure, you can maintain it in SAP.
  Use transaction CUNI (Units of Measure) to create or check units.
  However, note that the system may still require the unit to be linked to an ISO code or be recognized as valid.
  
  
  
  Check Material Master Data:
  
  If the error occurs during material master creation, ensure the base unit of measure and alternative units are valid ISO codes.
  
  
  
  Consult with SAP Basis/Configuration Team:
  
  If you believe the unit should be valid, check if the ISO code list is properly maintained in your system.
  Sometimes, the ISO code list might be incomplete or customized.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  CUNI – Units of Measure maintenance
  MM01/MM02 – Material Master Create/Change
  ME21N – Create Purchase Order (where UoM is used)
  
  
  
  Tables:
  
  T006 – Units of Measure
  T006A – ISO Units of Measure
  
  
  
  Notes:
  
  SAP expects units of measure to be consistent and standardized to avoid confusion in inventory, purchasing, and sales processes.
  Using non-standard units can cause integration issues with other SAP modules or external systems.
  
  
  
  
  Summary:
  
  Cause: Unit of measure entered is not recognized as a valid ISO code.
  Effect: Item with that UoM is not adopted/processed.
  Solution: Use valid ISO units of measure or maintain the required unit properly in SAP using transaction CUNI.
  
  
  If you need further help, please provide the exact unit of measure you are trying to use and the transaction where the error occurs.