How To Fix LB126 - Unit of measurement & is not allowed for characteristic &

SAP Error Message - Details

• Message type: E = Error

• Message class: LB - Logistics: Batch - Management

• Message number: 126

• Message text: Unit of measurement & is not allowed for characteristic &

What causes this issue?

The unit of measurement &V2& you have entered does not exist. This is
due to an internal error (the unit of measurement of the characteristic
was deleted in Customizing).

System Response

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

How to fix this error?

Please check the entries for units of measurement in Customizing.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message LB126 - Unit of measurement & is not allowed for characteristic & ?

  The SAP error message LB126, which states "Unit of measurement & is not allowed for characteristic &," typically occurs in the context of handling characteristics in the SAP system, particularly when dealing with classification or material management. This error indicates that the unit of measurement (UoM) you are trying to use is not valid for the specified characteristic.
  Cause:
  
  Incorrect Unit of Measurement: The UoM you are trying to assign to a characteristic is not defined or allowed in the system for that specific characteristic.
  Configuration Issues: The characteristic may have been configured to accept only certain units of measurement, and the one you are trying to use is not among them.
  Data Entry Errors: There may be a typo or mistake in the UoM being entered.
  Master Data Issues: The material or classification data may not be set up correctly, leading to this error.
  
  Solution:
  
  
  Check Characteristic Configuration:
  
  Go to the transaction code CT04 (Characteristic) and check the configuration of the characteristic in question.
  Ensure that the allowed units of measurement are correctly defined for that characteristic.
  
  
  
  Review Unit of Measurement:
  
  Verify that the UoM you are trying to use is correctly defined in the system. You can check this in transaction code CUNI (Unit of Measure).
  If the UoM is not defined, you may need to create it or select a different UoM that is allowed.
  
  
  
  Adjust Material Master Data:
  
  If the characteristic is linked to a material, check the material master data using transaction code MM03 (Display Material) to ensure that the correct UoM is being used.
  
  
  
  Consult Documentation:
  
  Review any relevant documentation or guidelines for the specific characteristics and their allowed units of measurement.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting SAP Notes for any known issues related to this error.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  CT04: Characteristic maintenance
  CUNI: Unit of Measure maintenance
  MM03: Display Material Master
  
  
  SAP Notes: Check SAP Notes for any updates or patches related to this error message.
  User Authorization: Ensure that you have the necessary authorizations to make changes to characteristics and units of measurement.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.