Message
Space By Plane and Offset Active Entity does not have the Reference Plane.
Severity
High.
Detailed Description
A Space By Plane and Offset Active Entity does not have a Reference Plane.
Possible Cause
Coding or data model errors in an earlier version.
Possible Impacts
Modification is not possible.
What You Should Do
The resultant volume can be selected in the Workspace Explorer and deleted. Or, you can delete the object by running the Clean Database custom command.