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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message BRAIN404 - Characteristic & must be uniquely selected in the query. ?

  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 selections.
  If the characteristic is part of a hierarchy, ensure that you are selecting a specific node rather than allowing multiple selections.
  
  
  
  Modify Characteristic Properties:
  
  Go to the InfoObject maintenance for the characteristic in question.
  Check the properties of the characteristic and ensure that it is set to allow unique selections if necessary.
  
  
  
  Use Filters:
  
  If applicable, add filters to the query to limit the selection of the characteristic to a specific value or set of values, ensuring that it is uniquely defined.
  
  
  
  Test the Query:
  
  After making changes, test the query again to see if the error persists. If it does, revisit the query design and characteristic settings.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or updates related to the BRAIN404 error. SAP frequently updates its documentation and may have specific notes addressing this error.
  Documentation: Review SAP BW documentation regarding query design and characteristics to better understand how to structure your queries effectively.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, providing insights or solutions from other users.
  
  By following these steps, you should be able to resolve the BRAIN404 error and ensure that your query executes successfully.