How To Fix GR665 - The key figure set is the selection set (only one entry is possible)

GR665 - Overview

• Message type: E = Error

• Message class: GR - Report Writer

• Message number: 665

• Message text: The key figure set is the selection set (only one entry is possible)

What causes this issue?

You cannot use a key figure set with more than one entry as a selection
set.

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?

Correct the key figure set. If several entries are necessary, the key
figure set must be used either in the column or in the row.

Error message extract from SAP system. Copyright SAP SE.

GR665 - Details

• The SAP error message GR665 indicates that there is an issue with the key figure set in your report or query. Specifically, it means that the system expects only one entry in the selection set for the key figure, but it has detected multiple entries. This can occur in various contexts, such as when working with SAP BW (Business Warehouse) or SAP Analytics.
  
  Cause:
  
  Multiple Entries in Selection Set: The primary cause of this error is that the selection set for the key figure contains more than one entry, which is not allowed in the context of the operation you are trying to perform.
  Incorrect Query Design: The query or report may have been designed in a way that allows for multiple selections when only a single selection is expected.
  Data Model Issues: There may be issues with the underlying data model or the way key figures are defined in the InfoProvider.
  
  
  Solution:
  
  Check Selection Set: