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Telegram bot (with add new admin rights) can't promote new admins or change custom title of existing ones. Why? – Telegram API

Am writing my first telegram bot for group chats with python-telegram-bot package. And faced an issue.

Bot with exactly same rights (all of them, incl. adding new admins)

  1. in my test groups (few users) – can promote new admins and change their custom title, no problem, but

  2. in larger group chat (300+ users) – fails to promote new admins & assign custom titles, and gets telegram.error.BadRequest: Chat_admin_required and telegram.error.BadRequest: Not enough rights to change custom title of the user errors.

Using bot.promoteChatMember to promote new admins, and bot.set_chat_administrator_custom_title to set custom titles.

Same bot, same rights, all looks same.

What can be an issue?

Thanks a lot

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2

Answers


  1. 0

    This problem is that:
    400 CHAT_ADMIN_REQUIRED You must be an admin in this chat to do this

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  2. 0

    To change custom title, user has to be promoted by the bot itself. Bot can not change titles for users promoted by others.

    Check get_chat_administrators method. For each user it will return can_be_edited flat which indicates whenever is bot capable for modifying this user.

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