@EntityListeners({AuditingEntityListener.class})
@MappedSuperclass
abstract class L1 {
}

//@EntityListeners({AuditingEntityListener.class}) // required???
@MappedSuperclass
abstract class L2 extends L1 {

    @CreatedDate
    private LocalDateTime some;
}

@Entity
class L3 extends L2 {

}