How To Fix WAHD634 - Unit of measure &1 not maintained for material &2

SAP Error Message - Details

• Message type: E = Error

• Message class: WAHD - 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 WAHD634 - Unit of measure &1 not maintained for material &2 ?

  The SAP error message WAHD634 indicates that a unit of measure (UoM) is not maintained for a specific material in the system. This error typically occurs when you are trying to perform an operation that requires a unit of measure for a material, but the system cannot find the necessary information.
  Cause:
  
  Missing Unit of Measure: The primary cause of this error is that the unit of measure for the specified material is not defined in the material master data.
  Incorrect Material Master Data: The material may not have been set up correctly, or the relevant UoM may not have been assigned.
  Data Inconsistency: There may be inconsistencies in the data, such as changes made to the material master that were not properly saved or updated.
  
  Solution:
  To resolve the WAHD634 error, follow these steps:
  
  
  Check Material Master Data:
  
  Go to the transaction code MM03 (Display Material) and enter the material number (&2 in the error message).
  Check the "Basic Data" and "Sales Org. Data" views to see if the unit of measure is maintained.
  
  
  
  Maintain Unit of Measure:
  
  If the unit of measure is missing, you can add it by using transaction code MM02 (Change Material).
  Navigate to the relevant views (e.g., Basic Data, Purchasing, Sales) and ensure that the unit of measure is correctly maintained.
  
  
  
  Check UoM Conversion:
  
  If the material uses multiple units of measure, ensure that the conversion factors are correctly defined in the "Units of Measure" view.
  
  
  
  Check for Material Type Restrictions:
  
  Some material types may have specific requirements for units of measure. Ensure that the material type allows for the unit of measure you are trying to use.
  
  
  
  Transport Requests:
  
  If changes were made in a development environment, ensure that they have been transported to the production environment.
  
  
  
  Consult Documentation:
  
  If you are unsure about the correct unit of measure or how to maintain it, refer to your organization's documentation or consult with a colleague who has experience with material master data.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  MM03: Display Material
  MM02: Change Material
  MM01: Create Material
  
  
  Material Master Views: Basic Data, Sales Org. Data, Purchasing, etc.
  Unit of Measure Settings: Check the configuration in the SAP system for units of measure under the relevant customizing settings.
  
  By following these steps, you should be able to resolve the WAHD634 error and ensure that the unit of measure is properly maintained for the specified material.