diff --git a/domain/usecase/go_out_usecase.py b/domain/usecase/go_out_usecase.py
index efe1951..7f22dd7 100644
--- a/domain/usecase/go_out_usecase.py
+++ b/domain/usecase/go_out_usecase.py
@@ -48,5 +48,5 @@ def run(self, uuid, outing_id, x_request_id):
             )
 
         self.pick_service.absent(
-            int(f"{student._grade}{student._group}{student._student_number}"),
+            int(f"{student._grade}{student._group}{str(student._student_number).zfill(2)}"),
             datetime.fromtimestamp(time.time()), outing.end_time)
diff --git a/infrastructure/sms/sms_service_impl.py b/infrastructure/sms/sms_service_impl.py
index a88cd00..36c3793 100644
--- a/infrastructure/sms/sms_service_impl.py
+++ b/infrastructure/sms/sms_service_impl.py
@@ -19,7 +19,7 @@ def send(self, target_number: str, message: str):
             'receiver': target_number,
             'msg': message,
             'msg_type': 'SMS',
-            'testmode_yn': 'Y'
+            'testmode_yn': 'N'
         }
 
         send_response = requests.post(send_url, data=sms_data)