In JPA, why do pre-remove events do not trigger validation unless enabled via validation group property?

Question

JPA delegates validation to the Bean Validation implementation during pre-persist and pre-update entity life-cycle events. But, pre-remove events do not trigger validation unless enabled via validation group property in persistence.xml. Why?

Answer 1

I guess an entity does not need to be validated for default group once you decide to delete it. By specifying group for delete, validation will be executed.