| 400 | BUSINESS_CONNECTION_NOT_ALLOWED | This method was invoked over a business connection using invokeWithBusinessConnection, but either (1) we're a user, and users cannot invoke methods over a business connection; (2) we're a bot, but business mode was disabled in @botfather or (3); we're a bot, but this method cannot be invoked over a business connection. |
| 400 | CHANNEL_FORUM_MISSING | This supergroup is not a forum. |
| 400 | CHANNEL_INVALID | The provided channel is invalid. |
| 400 | PEER_ID_INVALID | The provided peer id is invalid. |
| 401 | AUTH_KEY_UNREGISTERED | The specified authorization key is not registered in the system (for example, a PFS temporary key has expired). |
| 403 | BOT_FORUM_CREATE_FORBIDDEN | Since the bot's user.bot_forum_can_manage_topics flag is not set, the user cannot create or modify bot forum topics. |
| 403 | PREMIUM_ACCOUNT_REQUIRED | A premium account is required to execute this action. |