Hi
Need help to understand what purpose of KEY ?
When I'm creating Calculation View Dimension and going to the Semantics --> Columns
The second column is KEY check box.

I checked all SAP Guides but can't found any reference for this setting.
There a lot of documentation regarding Attribute View's KEYs , but no word regarding Calculation View.
Anyone know why a should define (or not) Column as Key in Calculation View Dimension ?
Thanks