StructContinuity type/priority not being set on a Root System.
The Structural Continuity for Ship Type (Continuous, Intercostal) or its priority is not set on a Root Plate, Stiffener, or Edge Reinforcement System.
Plates and Stiffeners may fail during processing, especially in Struct Detailing where the Rules are used. The Physical Connections for profiles penetrating plates would be the prime problem.
What You Should Do
Select the Root System, and edit the Ship type on the property page.
Re-run the Check Database Integrity custom command to verify that this error has been fixed.