It is not possible to perform the below given tasks for the items.
- Create, copy/paste, cut/paste, or drag an item directly under a catalog.
- Specify a revision of the item. Only the last revision of an item can be inserted.
- Display the objects pointed by items in the catalog
tree.
- Insert any modified object (in session) under a catalog.
- Remove the item (reference, representation, or feature) pointing to a deleted object from the catalog structure. If you try to access the item, a warning message appears indicating that the pointed object has been deleted.