A ProfileSystem exists with a connection on its end port that is split.
A profile system exists with a connection on its end port that is split.
A profile bounded by a plate that is split at the same location as the end port of the profile.
What You Should Do
Open the model.
In the Molded Forms task, remove the split end connections.
Re-run the Check Database Integrity custom command and the DBIntegrity report.
If the object is still posted, contact Smart 3D Support. If possible, explain how to duplicate the situation.