How To Fix L6040 - Unit of measure & not allowed according to material master; (&)

SAP Error Message - Details

• Message type: E = Error

• Message class: L6 - LVS Link R/2 - ECC

• Message number: 040

• Message text: Unit of measure & not allowed according to material master; (&)

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Enter a valid <GL:unit_of_measure>unit of measure</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message L6040 - Unit of measure & not allowed according to material master; (&) ?

  The SAP error message L6040 indicates that there is an issue with the unit of measure (UoM) being used in a transaction that is not allowed according to the material master data. This typically occurs in scenarios such as inventory management, goods movements, or sales and distribution when the system checks the UoM against the settings defined in the material master.
  Cause:
  
  Incorrect Unit of Measure: The unit of measure being used in the transaction does not match any of the allowed units defined in the material master for that specific material.
  Missing UoM Configuration: The material master may not have the required unit of measure set up correctly, or the UoM is not maintained in the relevant views (e.g., purchasing, sales, or inventory).
  UoM Conversion Issues: If there are conversion factors defined, they may not be set up correctly, leading to the error when trying to convert between units.
  Material Type Restrictions: Certain material types may have restrictions on which units of measure can be used.
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03) and check the relevant views (Basic Data, Purchasing, Sales, etc.) to ensure that the unit of measure you are trying to use is listed as an allowed unit.
  If the UoM is not present, you may need to add it using transaction code MM02 (Change Material).
  
  
  
  Maintain Units of Measure:
  
  Ensure that the unit of measure is correctly maintained in the material master. You can add or modify units of measure in the Basic Data view or the relevant views for purchasing and sales.
  
  
  
  Check UoM Conversion:
  
  If you are using a unit of measure that requires conversion, ensure that the conversion factors are correctly defined in the material master.
  
  
  
  Review Transaction:
  
  Verify the transaction you are trying to perform and ensure that you are using the correct unit of measure as per the material master.
  
  
  
  Consult Documentation:
  
  If you are unsure about the allowed units of measure for a specific material, consult the SAP documentation or your organization's SAP support team for guidance.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  MM03: Display Material Master
  MM02: Change Material Master
  MM01: Create Material Master
  
  
  Unit of Measure Configuration: You can configure units of measure in the SAP system through the customizing settings (transaction code SPRO), under Logistics General > Material Master > Basic Settings > Define Units of Measure.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues or bugs related to unit of measure handling in your version of SAP.
  
  By following these steps, you should be able to resolve the L6040 error and ensure that the correct units of measure are being used in your transactions.