BracketByPlane PlateSystem's ReferenceCollection has no symbol inputs.
A BracketByPlane PlateSystem's ReferenceCollection has no symbol inputs, which is the collection's primary use.
The geometry and display of the PlateSystem will not be correct. This problem can affect other related objects.
What You Should Do
Open the model.
In the Molded Forms task, select the BracketByPlane PlateSystem, select a valid symbol, and make any other necessary modification.
Re-run the Check Database Integrity custom command and the DBIntegrity report.
If the object is still posted, contact Smart 3D Support.