diff --git a/scripts/error-codes/codes.json b/scripts/error-codes/codes.json
index 05888dfb21214..2f2bcaafe7cc1 100644
--- a/scripts/error-codes/codes.json
+++ b/scripts/error-codes/codes.json
@@ -142,5 +142,6 @@
   "140": "Expected hook events to fire for the child before its parent includes it in onSetChildren().",
   "141": "Expected onSetChildren() to fire for a container child before its parent includes it in onSetChildren().",
   "142": "Expected onBeforeMountComponent() parent and onSetChildren() to be consistent (%s has parents %s and %s).",
-  "143": "React.Children.only expected to receive a single React element child."
+  "143": "React.Children.only expected to receive a single React element child.",
+  "144": "Item must have been set"
 }