diff --git a/src/resources/signIn/index.ts b/src/resources/signIn/index.ts
index 15375a4..723fc09 100644
--- a/src/resources/signIn/index.ts
+++ b/src/resources/signIn/index.ts
@@ -6,7 +6,7 @@ import * as en from './locales/en.json';
 
 const i18n: II18n = { fr, en };
 
-const authentication: IErrorRes = {
+const signIn: IErrorRes = {
   client: {
     formInvalidEmail: {
       status: EHttpCode.BAD_REQUEST,
@@ -26,4 +26,4 @@ const authentication: IErrorRes = {
   i18n,
 };
 
-export default authentication;
+export default signIn;
diff --git a/src/resources/signUp/index.ts b/src/resources/signUp/index.ts
new file mode 100644
index 0000000..b8295b4
--- /dev/null
+++ b/src/resources/signUp/index.ts
@@ -0,0 +1,20 @@
+import { II18n, IErrorRes, EHttpCode } from '../../types';
+
+// Locales
+import * as fr from './locales/fr.json';
+import * as en from './locales/en.json';
+
+const i18n: II18n = { fr, en };
+
+const signUp: IErrorRes = {
+  client: {
+    formEmailAlreadyExists: {
+      status: EHttpCode.BAD_REQUEST,
+    },
+  },
+  internal: {},
+  external: {},
+  i18n,
+};
+
+export default signUp;
diff --git a/src/resources/signUp/locales/en.json b/src/resources/signUp/locales/en.json
new file mode 100644
index 0000000..cad15e5
--- /dev/null
+++ b/src/resources/signUp/locales/en.json
@@ -0,0 +1,7 @@
+{
+  "client": {
+    "formEmailAlreadyExists": "Email already exist"
+  },
+  "internal": {},
+  "external": {}
+}
diff --git a/src/resources/signUp/locales/fr.json b/src/resources/signUp/locales/fr.json
new file mode 100644
index 0000000..60f0975
--- /dev/null
+++ b/src/resources/signUp/locales/fr.json
@@ -0,0 +1,7 @@
+{
+  "client": {
+    "formEmailAlreadyExists": "Un compte existe déjà avec cet email"
+  },
+  "internal": {},
+  "external": {}
+}