diff --git a/consts/errorcode/error_code.go b/consts/errorcode/error_code.go
index 984ca9c..8dffeb3 100644
--- a/consts/errorcode/error_code.go
+++ b/consts/errorcode/error_code.go
@@ -7,4 +7,5 @@ const (
 	DataExists      = "DataExists"
 	BadArgument     = "BadArgument"
 	TaskNotFound    = "TaskNotFound"
+	Unauthorized    = "Unauthorized"
 )