diff --git a/telethon_generator/data/errors.csv b/telethon_generator/data/errors.csv
index 4a13a255..2414da28 100644
--- a/telethon_generator/data/errors.csv
+++ b/telethon_generator/data/errors.csv
@@ -526,3 +526,4 @@ WEBPUSH_TOKEN_INVALID,400,The specified web push token is invalid
 WORKER_BUSY_TOO_LONG_RETRY,500,Telegram workers are too busy to respond immediately
 YOU_BLOCKED_USER,400,You blocked this user
 FROZEN_METHOD_INVALID,400,You try to use method that not available for frozen accounts
+FROZEN_PARTICIPANT_MISSING,420 You try to use method that not available when your account is frozen and you are not member in chat