How To Fix R9E978 - Unable to load; duplicate technical name '&1' for '&2' and '&3'

R9E978 - Overview

• Message type: E = Error

• Message class: R9E - Error Messages for Query Designer .NET

• Message number: 978

• Message text: Unable to load; duplicate technical name '&1' for '&2' and '&3'

What causes this issue?

You are trying to open a query or a filter in Query Designer. During
loading, the system found that the same technical name &V1& is used in
&V2& and &V3& . This is not permitted.

System Response

Loading is cancelled.

How to fix this error?

Delete one of the two duplicate elements. You will then be able to open
the other element.

Error message extract from SAP system. Copyright SAP SE.

R9E978 - Details

• The SAP error message R9E978 indicates that there is a conflict due to a duplicate technical name in the system. This typically occurs when two or more objects (like programs, function modules, or classes) have been assigned the same technical name, which leads to ambiguity when the system tries to load or access them.
  
  Cause:
  
  Duplicate Technical Names: The primary cause of this error is that two or more objects have been created with the same technical name. This can happen during development when multiple developers create objects without proper coordination or naming conventions.
  Transport Issues: If objects are transported from one system to another (e.g., from development to production), and there are naming conflicts, this error can arise.
  Namespace Conflicts: If you are using a custom namespace and there are conflicts with standard SAP objects or other custom objects, this can also lead to this error.
  
  
  Solution:
  
  Identify Duplicates: Use transaction SE80 (Object Navigator) or