Equipment Unspecified Error 2 (Permission Group of the shape is different from the corresponding Smart Equipment).
The permission group of a shape should be the same as the corresponding smart equipment.
Copying the shapes of design equipment to another design equipment in a different permission group. Then, the shape in the design equipment does not have the same permission group as that of its parent design equipment.
This problem prevents the deletion of the equipment because you do not have permission to the permission group of the child (shape).
What You Should Do
Run the Clean Database custom command, which sets the Equipment permission group to the shape.