Space Entity does not have a Catalog Part.
Space Entity does not have a Catalog Part connected to it.
Coding or data model errors in an earlier version.
No impact. You can add another catalog part to the SpaceEntity and can modify the volume.
What You Should Do
In the Workspace Explorer, select the space object, and assign a new catalog part to the object.
Open a session.
Select the space object. You can select it either in the Workspace Explorer or in a graphic view. The modify ribbon appears.
On the ribbon, in the Type combo box, select a new catalog part to assign to the object.