diff --git a/libs/app-error/src/lib.rs b/libs/app-error/src/lib.rs
index 11f49c28..287aeced 100644
--- a/libs/app-error/src/lib.rs
+++ b/libs/app-error/src/lib.rs
@@ -352,6 +352,9 @@ pub enum ErrorCode {
   AccessRequestAlreadyExists = 1043,
   CustomNamespaceDisabled = 1044,
   CustomNamespaceDisallowed = 1045,
+  CustomNamespaceTooShort = 1046,
+  CustomNamespaceTooLong = 1047,
+  CustomNamespaceReserved = 1048,
 }
 
 impl ErrorCode {