From bcb3878c8b69852882efd2aed6d57692069a17d9 Mon Sep 17 00:00:00 2001
From: namdh861 <namdh861@gmail.com>
Date: Mon, 24 Aug 2026 08:08:39 +0700
Subject: [PATCH] feat: add code

---
 src/main/java/aplp/backend/core/common/exception/ErrorCode.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/aplp/backend/core/common/exception/ErrorCode.java b/src/main/java/aplp/backend/core/common/exception/ErrorCode.java
index 82d3702..ccf4381 100644
--- a/src/main/java/aplp/backend/core/common/exception/ErrorCode.java
+++ b/src/main/java/aplp/backend/core/common/exception/ErrorCode.java
@@ -10,6 +10,7 @@ public enum ErrorCode {
     INVALID_REFRESH_TOKEN(401),
     ACCESS_DENIED(403),
     EMAIL_ALREADY_EXISTS(409),
+    USERNAME_ALREADY_EXISTS(409),
     USER_NOT_FOUND(404),
     LEARNER_NOT_FOUND(404),
     INTERNAL_ERROR(500);