You need to set ‘On delete inverse’ for person attribute in PersonDetail entity.
Select CASCADE option if you want PersonDetail to be deleted when deleting Person (which is assumed if you use composition).
I was following procedures from “Quick start” video High productivity application development platform (min 2.30) and assumed that Cuba Studio would set this values by default as for StandardEntity parent class.
Is it possible that this could be a default setting for Cuba Studio when creating composition property under BaseUuidEntity Parent Class in the future?