How To Fix L4026 - Unit of measure & is not maintained

SAP Error Message - Details

• Message type: E = Error

• Message class: L4 - LVS inventory

• Message number: 026

• Message text: Unit of measure & is not maintained

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message L4026 - Unit of measure & is not maintained ?

  The SAP error message L4026, which states "Unit of measure & is not maintained," typically occurs in the context of inventory management or logistics when the system encounters a unit of measure (UoM) that has not been defined or maintained in the system. This can happen in various scenarios, such as when creating or processing material documents, purchase orders, or sales orders.
  Cause:
  
  Missing UoM Definition: The specified unit of measure is not defined in the system for the material in question.
  Incorrect UoM Usage: The UoM being used may not be valid for the material or may not be set up correctly in the material master.
  Configuration Issues: There may be issues with the configuration of the material master data or the unit of measure settings in the system.
  
  Solution:
  
  
  Check Material Master:
  
  Go to the material master record (transaction code MM03).
  Check the "Basic Data" and "Purchasing" views to see if the unit of measure is maintained.
  If the UoM is missing, you can add it using transaction code MM02 (Change Material) or MM01 (Create Material).
  
  
  
  Maintain Units of Measure:
  
  Ensure that the unit of measure is defined in the UoM table (transaction code CUNI).
  You can add or modify units of measure as needed.
  
  
  
  Check UoM Conversion:
  
  If you are using multiple units of measure, ensure that the conversion factors are correctly defined in the material master.
  
  
  
  Review Configuration:
  
  Check the configuration settings for units of measure in the SAP system. This can be done through the SPRO transaction (Customizing) under Logistics > General > Material Master > Settings for Key Fields > Define Units of Measure.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for additional guidance on units of measure and material master data.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  CUNI: Maintain Units of Measure
  SPRO: Customizing Implementation Guide
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  
  
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to maintain material master data and units of measure.
  
  
  By following these steps, you should be able to resolve the L4026 error and ensure that the unit of measure is properly maintained in your SAP system.