Shape does not have an equipment parent.
The shape is not related to a design equipment parent anymore. This situation is unexpected.
The cause is currently unknown.
Some commands may work incompletely.
Equipment reports may be erroneous or inaccurate.
It is impossible to retrieve equipment using filters and style rules based on systems.
What You Should Do
Open the model.
Delete the shape(s).
Save the session.
Refresh all session files with a workspace including the equipment.