How To Fix 5AT121 - Attribute &1 redefined as subordinate object &2

SAP Error Message - Details

• Message type: E = Error

• Message class: 5AT - General Attribute Maintenance

• Message number: 121

• Message text: Attribute &1 redefined as subordinate object &2

What causes this issue?

Attribute &SYST-MSGV1& can only be assigned once within the assignment
hierarchy. However, you have used it several times (in subordinate
object &SYST-MSGV2&).

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?

Make sure that the attribute is only assigned to a single object within
the assignment hierarchy. Either delete the attribute on the current
object, or on subordinate object &SYST-MSGV2&.

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 5AT121 - Attribute &1 redefined as subordinate object &2 ?

  The SAP error message 5AT121, which states "Attribute &1 redefined as subordinate object &2," typically occurs in the context of the Business Object (BO) modeling or when working with the ABAP Dictionary. This error indicates that there is a conflict in the definition of an attribute within a business object or data structure.
  Cause:
  The error arises when an attribute that has already been defined in a business object is being redefined as a subordinate object. This can happen due to:
  
  Duplicate Definitions: The same attribute is defined multiple times in the same context, leading to ambiguity.
  Incorrect Hierarchical Structure: The attribute is being incorrectly assigned as a subordinate object when it should remain as a standalone attribute.
  Modeling Errors: Errors in the modeling of the business object or data structure, such as incorrect relationships or associations.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Definitions: Review the definitions of the business object and ensure that the attribute is not defined multiple times. Look for any duplicate entries in the object model.
  
  
  Correct Hierarchical Structure: Ensure that the attribute is correctly defined as an attribute and not mistakenly set as a subordinate object. If it is intended to be a subordinate object, ensure that it is defined correctly in the context of the parent object.
  
  
  Adjust Relationships: If the attribute is meant to be a subordinate object, check the relationships and associations to ensure they are correctly set up. You may need to redefine the relationships to avoid conflicts.
  
  
  Rebuild the Object: In some cases, it may be necessary to delete and recreate the business object or attribute to clear any inconsistencies.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on defining attributes and subordinate objects in your version of SAP.
  
  
  Testing: After making changes, test the business object to ensure that the error is resolved and that the object behaves as expected.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Documentation: Review the official SAP documentation for guidelines on business object modeling and attribute definitions.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.