How To Fix LB131 - You have already assigned unit of measure & to characteristic &

LB131 - Overview

• Message type: E = Error

• Message class: LB - Logistics: Batch - Management

• Message number: 131

• Message text: You have already assigned unit of measure & to characteristic &

What causes this issue?

You tried to assign a characteristic to the unit of measure &V1&. The
unit of measure is already being used in another characteristic.

System Response

How to fix this error?

Choose a different unit of measure.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

LB131 - Details

• The SAP error message LB131, which states "You have already assigned unit of measure & to characteristic &," typically occurs in the context of handling characteristics and units of measure in SAP, particularly in the areas of Material Management (MM) or Production Planning (PP).
  
  Cause:
  This error arises when you attempt to assign a unit of measure (UoM) to a characteristic that has already been assigned a different UoM. In SAP, each characteristic can only have one unit of measure assigned to it at a time. This is a safeguard to ensure data integrity and consistency in the system.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Navigate to the relevant transaction (e.g., CT04 for characteristics) and check the existing assignments for the characteristic in question. Verify which unit of measure is currently assigned.
  
  
  
  Remove Existing Assignment:
  
  If you need to change the unit of measure, you will first need to remove