A GeneratePlatePart_AE does not have a related PlateSystem.
A generate plate part active entity (AE) does not have a related plate system: Missing the GeneratePlatePart_OPRND relationship to PlateSystem for GeneratePlatePart_AE.
What You Should Do
Open the model.
In the Molded Forms task, select the object, and modify it, if necessary. Or, select the object, and perform a re-computation to update it.
Re-run the Check Database Integrity custom command and the DBIntegrity report.
If the object is still posted, contact Smart 3D Support.