Property object's approval status or permission group does not match with Drawing Sheet or SnapIn.
A Drawing Property object's Approval Status or Permission Group does not match that of the owning Drawing Sheet or SnapIn object. By design, a Property object must have the same approval status and permission group values as that of the owner object (Drawing Sheet or SnapIn object).
When the approval status value of the Drawing Sheet or SnapIn was changed, the value did not propagate to the Property object.
This problem can potentially stop a delete operation on the drawing sheet or snap-in. You might not be able to change the properties of the Drawing Sheet or SnapIn objects.
What You Should Do
Run the Clean Database custom command, select the objects, and click Clean Now. This operation sets the correct approval status and permission group values on the Property objects.