How To Fix 5AT123 - Attribute &1 with value &2 already assigned to &3

5AT123 - Overview

• Message type: E = Error

• Message class: 5AT - General Attribute Maintenance

• Message number: 123

• Message text: Attribute &1 with value &2 already assigned to &3

What causes this issue?

The attribute &SYST-MSGV1& can only be used with a specified value once
at any particular time.
The value &SYST-MSGV2& was already assigned to object &SYST-MSGV3&.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 5AT123 - Attribute &1 with value &2 already assigned to &3 ?

  The SAP error message 5AT123 indicates that there is an attempt to assign an attribute to an object where that attribute has already been assigned to another object. This typically occurs in the context of master data management, such as when dealing with characteristics in classification or attributes in material management.
  
  Cause:
  The error is triggered when:
  
  You are trying to assign an attribute (characteristic) to a specific object (like a material or a class) that has already been assigned to another object.
  There may be a configuration issue or a misunderstanding of the data model where the same attribute is not allowed to be assigned to multiple objects simultaneously.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Review the current assignments of the attribute in question. You can do this by navigating to the relevant transaction (e.g., CL02 for classes, MM02 for materials) and checking the characteristics assigned to the object.
  
  
  
  Modify