diff --git a/scripts/error-codes/codes.json b/scripts/error-codes/codes.json
index c116dd26537d5..88c229cd9d99f 100644
--- a/scripts/error-codes/codes.json
+++ b/scripts/error-codes/codes.json
@@ -230,5 +230,7 @@
   "228": "TestUtils.Simulate expected a DOM node as the first argument but received a React element. Pass the DOM node you wish to simulate the event on instead. Note that TestUtils.Simulate will not work if you are using shallow rendering.",
   "229": "TestUtils.Simulate expected a DOM node as the first argument but received a component instance. Pass the DOM node you wish to simulate the event on instead.",
   "230": "_processChildContext is not available in React 16+. This likely means you have multiple copies of React and are attempting to nest a React 15 tree inside a React 16 tree using unstable_renderSubtreeIntoContainer, which isn't supported. Try to make sure you have only one copy of React (and ideally, switch to ReactDOM.unstable_createPortal).",
-  "231": "Expected `%s` listener to be a function, instead got a value of `%s` type."
+  "231": "Expected `%s` listener to be a function, instead got a value of `%s` type.",
+  "232": "_processChildContext is not available in React 16+. This likely means you have multiple copies of React and are attempting to nest a React 15 tree inside a React 16 tree using unstable_renderSubtreeIntoContainer, which isn't supported. Try to make sure you have only one copy of React (and ideally, switch to ReactDOM.createPortal).",
+  "233": "Unsupported top level event type \"%s\" dispatched"
 }