You are using Custom CDS Views app (new).
You need to change the CDS association join condition or delete the association.
You click on the delete button in the Data Source detail tab and you get the following error "Data cannot be deleted since deletion is disabled /BOBF/FRW_COMMON/108."
Reproducing the Issue
1. Go to the Custom CDS View app (new)
2. Open the custom CDS view YY1_XXX
3. Click on the edit button
4. In the Data Source tab, click on the Join condition button of the association you want to change.
5. In the new popup, select the join condition you want to delete and click on delete.
Error: "Data cannot be deleted since deletion is disabled /BOBF/FRW_COMMON/108."
The custom CDS view YY1_XXX has dependencies, it is consumed by a custom CDS view, communication scenario or custom analytical query.
It is not possible to delete or change or add a new on condition to an existing association of a custom CDS view that is already in use.
When a custom view is used by other objects (dependencies exist), then the custom view has to be kept stable by not allowing INCOMPATIBLE changes that can invalidate the depending objects.
And modifying the on condition of an association is such an incompatible change that has the potential to (semantically and technically) harm the objects on top.
Delete association, change association, custom cds view, dependencies, /BOBF/FRW_COMMON/108 , KBA , BC-SRV-APS-GKE , Generic CDS Key User Editor , Problem