diff --git a/aio/content/errors/NG1003.md b/aio/content/errors/NG01003.md
similarity index 97%
rename from aio/content/errors/NG1003.md
rename to aio/content/errors/NG01003.md
index 83bd0c84ef9..b44cc1c70be 100644
--- a/aio/content/errors/NG1003.md
+++ b/aio/content/errors/NG01003.md
@@ -1,5 +1,5 @@
 @name Wrong Async Validator Return Type
-@category forms
+@category runtime
 @shortDescription Async validator must return a Promise or Observable
 
 @description
diff --git a/aio/content/errors/NG2200.md b/aio/content/errors/NG02200.md
similarity index 100%
rename from aio/content/errors/NG2200.md
rename to aio/content/errors/NG02200.md