Starting with the release of Strategy ONE (March 2024), dossiers are also known as dashboards.
CONTENT:
The users may get the following error while creating group in dossier on Strategy Web
(Invalid element value ‘XXX’ for attribute ‘XXX’ (form ‘’). Expected value type is numeric.)

STEPS TO REPRODUCE
1) Create a Dossier with a grid visualization
2) Select several elements inside the grid and right mouse click on it to group them
3) Get the above error that expected value type is numeric.
CAUSE:
One of the possible cause for this issue is the data type for the column alias of this attribute form was set incorrectly as Numeric while the data from database is in the type of Character.
ACTION:
Access the attribute from Strategy Developer. Open the Attribute Editor and modify the form where issue exist. Switch to Column Alias tab and change the Data Type corresponding to the one from the Database.
WORKAROUND:
Besides of creating group inside the grid visualization directly, users can right mouse click on the Attribute, choose Create Groups to create groups in the group editor:

KB441161