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

SAP Error Message - Details

• 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 or Remove Existing Assignments:
  
  If the attribute is already assigned to another object and you need it for the current object, you may need to either:
  
  Remove the attribute from the existing object.
  Change the assignment of the attribute to the desired object.
  
  
  
  
  
  Review Configuration:
  
  Ensure that the configuration settings allow for the intended assignments. This may involve checking the classification system settings or the specific settings for the attributes in question.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on the classification and attribute assignment processes.
  
  
  
  Seek Help from SAP Support:
  
  If the issue persists and you cannot find a resolution, consider reaching out to SAP support for assistance. They can provide insights based on the specific configuration and version of your SAP system.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CL01 (Create Class), CL02 (Change Class), CL03 (Display Class), MM01 (Create Material), MM02 (Change Material), etc.
  SAP Notes: Check for any SAP Notes related to this error message for potential patches or updates that may address the issue.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to make changes to the attributes and objects in question.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.