diff --git a/protocol/errors.json b/protocol/errors.json
index 46a8c53..8c9d9a2 100644
--- a/protocol/errors.json
+++ b/protocol/errors.json
@@ -182,6 +182,17 @@
   "91004": "unable to automatically re-enter presence channel",
   "91005": "presence state is out of sync",
   "91100": "member implicitly left presence channel (connection closed)",
+  "92000": "Invalid message type: state type required",
+  "92001": "Channel state max objects limit exceeded",
+  "92002": "State message(s) required",
+  "92003": "Invalid state message",
+  "92004": "State messages do not support form encoding",
+  "92005": "State operation required",
+  "92006": "Invalid operation",
+  "92007": "Invalid map operation",
+  "92008": "Invalid counter operation",
+  "92009": "State object required",
+  "92010": "Invalid state object",
 
   "101000": "must have a non-empty name for the space",
   "101001": "must enter a space to perform this operation",