face_id always when i use it any api same error : does not exist

[mrosama]

{
"error": "INVALID_ARGUMENTS: face_id does not exist",
"error_code": 1005

}

i get face_id from detection/detect when i pass url image
and use this face_id to add face to person i create it is name osama_salama1 i want add this face to person ..

---

var api= new FacePP('*_', '_');

    api.request('person/add_face',{person_name:'osama_salama1',face_id:'9d30f34bc1df98a177afe653df93c27f'}, function(err, result) {
      if (err) {
        // TODO handle error
        console.dir(err)
        return;
      }
      // TODO use result
      document.getElementById('response').innerHTML = JSON.stringify(result, null, 2);
    });

---

my problem is evey time i use face_id in any api give me same error ..what i miss .