How To Fix MAHD634 - Unit of measure &1 not maintained for material &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MAHD - Messages for Alternative Historical Data

• Message number: 634

• Message text: Unit of measure &1 not maintained for material &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MAHD634 - Unit of measure &1 not maintained for material &2 ?

  The SAP error message MAHD634 indicates that a specific unit of measure (UoM) is not maintained for a particular material in the system. This error typically arises when you are trying to perform an operation that requires a unit of measure for a material, but the system cannot find the necessary configuration.
  Cause:
  
  Missing Unit of Measure: The primary cause of this error is that the unit of measure for the specified material has not been defined in the material master data.
  Incorrect Material Master Data: The material master may not have been properly set up, or the relevant UoM may not have been assigned to the material.
  Configuration Issues: There may be issues with the configuration of the material types or UoM settings in the system.
  
  Solution:
  To resolve the MAHD634 error, follow these steps:
  
  
  Check Material Master Data:
  
  Go to the transaction code MM03 (Display Material) or MM02 (Change Material).
  Enter the material number (&2) and check the Basic Data view and the Purchasing view.
  Ensure that the required unit of measure (&1) is maintained in the "Units of Measure" section.
  
  
  
  Maintain Unit of Measure:
  
  If the unit of measure is missing, you can add it by going to MM02 and navigating to the "Units of Measure" tab.
  Add the required UoM and save the changes.
  
  
  
  Check UoM Conversion:
  
  If you are using multiple units of measure, ensure that the conversion factors are correctly defined in the material master.
  
  
  
  Review Material Type Configuration:
  
  If the issue persists, check the configuration settings for the material type in the SPRO transaction (Customizing).
  Ensure that the unit of measure settings are correctly configured for the material type you are using.
  
  
  
  Check for Authorizations:
  
  Ensure that you have the necessary authorizations to view or change the material master data.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  MM03: Display Material
  MM02: Change Material
  MM01: Create Material
  SPRO: Customizing Implementation Guide
  
  
  
  Unit of Measure Types: Understand the different types of units of measure (base unit, alternative units, etc.) and how they relate to your materials.
  
  
  Documentation: Refer to SAP Help documentation for detailed information on material master data and unit of measure settings.
  
  
  By following these steps, you should be able to resolve the MAHD634 error and ensure that the necessary unit of measure is maintained for the specified material.