How To Fix BRAIN404 - Characteristic & must be uniquely selected in the query.

BRAIN404 - Overview

• Message type: E = Error

• Message class: BRAIN -

• Message number: 404

• Message text: Characteristic & must be uniquely selected in the query.

What causes this issue?

Characteristic &V1& (&V2&) is either not used or is not used correctly
in the query definition.
For characteristic &V1&, in the InfoObject maintenance, you can set that
a unique selection must be made in the query for each cell
(COB_PRO-CHASEL = &V3& and COB_PRO-CHANAV = &V4&. You can find this
setting in the InfoObject maintenance on the <ZK>Business Explorer</>
tab page, under the group heading <ZK>General Settings</> ->
<ZK>Selection</>; or in InfoCube maintenance, via <ZK>Extras</> ->
<ZK>Structure-specific InfoObject Properties</> -> <ZK>Selection</>.)

System Response

The query cannot be generated nor executed.

How to fix this error?

Characteristic &V1& must be used in the fixed filter, in each selection
element of the structure, or as a free characteristic.
Alternatively, you can change the settings for characteristic &V1& in
the InfoObject maintenance, or the settings for this InfoCube in the
InfoCube maintenance.

Error message extract from SAP system. Copyright SAP SE.

BRAIN404 - Details

• The SAP error message BRAIN404 indicates that a characteristic in your query must be uniquely selected. This typically occurs in SAP BW (Business Warehouse) when you are trying to execute a query that includes a characteristic that is not uniquely defined, leading to ambiguity in the data retrieval process.
  
  Cause:
  
  
  Non-Unique Selection: The characteristic in question is included in the query but is not uniquely defined. This can happen if:
  
  The characteristic is part of multiple hierarchies.
  The characteristic is included in multiple dimensions or InfoObjects.
  The query is set up in a way that allows for multiple selections of the same characteristic.
  
  
  
  Query Design Issues: The query might be designed in a way that does not enforce unique selection for certain characteristics, leading to confusion in data retrieval.
  
  
  
  Solution:
  
  
  Check Query Design:
  
  Open the query in the Query Designer.
  Review the characteristics included in the query. Ensure that the characteristic causing the error is set to allow only unique