diff --git a/apps/users/serializers.py b/apps/users/serializers.py
index ff7b3e0..9f1ba07 100644
--- a/apps/users/serializers.py
+++ b/apps/users/serializers.py
@@ -73,12 +73,12 @@ class RequestOTPSerializer(serializers.ModelSerializer):
             try:
                 user.set_otp()
             except Exception as e:
-                raise UnprocessableEntity(_('otp expire time not reached'))
+                raise UnprocessableEntity(_('otp expire time not reached'), code='opt_not_expired')
 
             user.send_otp()
 
         else:
-            raise UnprocessableEntity(_('otp expire time not reached yet'))
+            raise UnprocessableEntity(_('otp expire time not reached yet'), code='opt_not_expired')
 
         self.instance = user
         return user