diff --git a/src/c2se/backend/identity.rs b/src/c2se/backend/identity.rs
index 79147f8..8f27cf6 100644
--- a/src/c2se/backend/identity.rs
+++ b/src/c2se/backend/identity.rs
@@ -2,6 +2,17 @@ use crate::protobuf::rpc;
 
 const SUBJECT: &str = "bet.beteran.c2se.backend.identity";
 
+pub const SUBJECT_CHECK_USERNAME_FOR_DUPLICATION: &str =
+  const_format::concatcp!(SUBJECT, ".CheckUsernameForDuplication");
+/// subject = bet.beteran.c2se.backend.identity.CheckUsernameForDuplication;
+
+pub const SUBJECT_CHECK_NICKNAME_FOR_DUPLICATION: &str =
+  const_format::concatcp!(SUBJECT, ".CheckNicknameForDuplication");
+/// subject = bet.beteran.c2se.backend.identity.CheckNicknameForDuplication;
+
+pub const SUBJECT_CAPTCHA: &str = const_format::concatcp!(SUBJECT, ".Captcha");
+/// subject = bet.beteran.c2se.backend.identity.Captcha
+
 pub const SUBJECT_SIGNIN: &str = const_format::concatcp!(SUBJECT, ".Signin");
 /// subject = bet.beteran.c2se.backend.identity.Signin
 #[derive(Clone, PartialEq, ::prost::Message)]
diff --git a/src/c2se/common/identity.rs b/src/c2se/common/identity.rs
index a858973..d38c4d0 100644
--- a/src/c2se/common/identity.rs
+++ b/src/c2se/common/identity.rs
@@ -2,9 +2,6 @@ use crate::protobuf::rpc;
 
 const SUBJECT: &str = "bet.beteran.c2se.common.identity";
 
-pub const SUBJECT_CHECK_USERNAME_FOR_DUPLICATION: &str =
-  const_format::concatcp!(SUBJECT, ".CheckUsernameForDuplication");
-/// subject = bet.beteran.c2se.common.identity.CheckUsernameForDuplication;
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct CheckUsernameForDuplicationRequest {
   #[prost(string, tag = "1")]
@@ -19,9 +16,6 @@ pub struct CheckUsernameForDuplicationResponse {
   pub duplicated: ::core::option::Option<bool>,
 }
 
-pub const SUBJECT_CHECK_NICKNAME_FOR_DUPLICATION: &str =
-  const_format::concatcp!(SUBJECT, ".CheckNicknameForDuplication");
-/// subject = bet.beteran.c2se.common.identity.CheckNicknameForDuplication;
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct CheckNicknameForDuplicationRequest {
   #[prost(string, tag = "1")]
@@ -36,8 +30,6 @@ pub struct CheckNicknameForDuplicationResponse {
   pub duplicated: ::core::option::Option<bool>,
 }
 
-pub const SUBJECT_CAPTCHA: &str = const_format::concatcp!(SUBJECT, ".Captcha");
-/// subject = bet.beteran.c2se.common.identity.Captcha
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct CaptchaRequest {}
 
diff --git a/src/c2se/frontend/identity.rs b/src/c2se/frontend/identity.rs
index eeca2c7..5401339 100644
--- a/src/c2se/frontend/identity.rs
+++ b/src/c2se/frontend/identity.rs
@@ -2,6 +2,17 @@ use crate::protobuf::rpc;
 
 const SUBJECT: &str = "bet.beteran.c2se.frontend.identity";
 
+pub const SUBJECT_CHECK_USERNAME_FOR_DUPLICATION: &str =
+  const_format::concatcp!(SUBJECT, ".CheckUsernameForDuplication");
+/// subject = bet.beteran.c2se.frontend.identity.CheckUsernameForDuplication;
+
+pub const SUBJECT_CHECK_NICKNAME_FOR_DUPLICATION: &str =
+  const_format::concatcp!(SUBJECT, ".CheckNicknameForDuplication");
+/// subject = bet.beteran.c2se.frontend.identity.CheckNicknameForDuplication;
+
+pub const SUBJECT_CAPTCHA: &str = const_format::concatcp!(SUBJECT, ".Captcha");
+/// subject = bet.beteran.c2se.frontend.identity.Captcha
+
 pub const SUBJECT_SIGNIN: &str = const_format::concatcp!(SUBJECT, ".Signin");
 /// subject = bet.beteran.c2se.frontend.identity.Signin
 #[derive(Clone, PartialEq, ::prost::Message)]