How to validate a payload in service class in Spring Boot

I have a Person pojo with some fields can't be null in MyGroup class.

 public class Person {
     @NotNull(message = "address not null", groups = { MyGroup.class })
     private String address;

     @NotNull(message = "groupId not null", groups = { MyGroup.class })
     private UUID groupId;

     private String name;
     private String phoneNumber;

     @Email
     private String email;
     private Boolean active;
}

I only want to validate the pojo when active = true, so I can't validate in the controller level.

I couldn't get the validation working in my service class:

 public class PersonService {
      @Validated(MyGroup.class)
      public PersonObject createPerson(@Valid Person p) { ... }

      public PersonObject updatePerson(Person p) { ... }
 }

In PersonsController where I invoked the service class

@Autowired
private PersonService personService;

@PostMapping
public PersonObject createPerson(@RequestBody Person payload) {
   if (payload.getActive()) {
       // want to validate the Not null fields
       return personService.createPerson(payload);
   } else {
       // does not need to validate fields 
       return personService.updatePerson(payload);
   }
}

I also couldn't get the email validation working properly. Any help would be appreciated.