From 4269eed0182529df3031fdc1ed3d26b49b66490c Mon Sep 17 00:00:00 2001
From: "tao.chen" <93983997+taochen-ct@users.noreply.github.com>
Date: Tue, 11 Aug 2026 15:13:13 +0800
Subject: [PATCH] fix: 422 error

---
 backend/src/backend/schedule_schemas.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backend/src/backend/schedule_schemas.py b/backend/src/backend/schedule_schemas.py
index 31c7fbc..feb0fc4 100644
--- a/backend/src/backend/schedule_schemas.py
+++ b/backend/src/backend/schedule_schemas.py
@@ -103,7 +103,7 @@ class CreateScheduleNodeRequest(StrictModel):
     node_key: str = Field(
         min_length=1,
         max_length=64,
-        pattern=r"^[A-Za-z][A-Za-z0-9_-]*$",
+        pattern=r"^[A-Za-z0-9][A-Za-z0-9_-]*$",
     )
     node_name: str = Field(min_length=1, max_length=255)
     versions_id: str = Field(min_length=26, max_length=26)