Detailed description:
The "CHAT_MEMBER_ADD_FAILED" error occurs in Telegram when the system is unable to add a new user to the specified chat. This error is closely related to the Telegram API, which controls adding members to groups and channels, checking user permissions and limitations.
When you attempt to add a user to a chat, the Telegram API verifies several factors: whether the user is banned, if you have the rights to add members, and whether the chat has reached its participant limit. If any of these conditions are not met, the "CHAT_MEMBER_ADD_FAILED" error will occur.
Causes of the "CHAT_MEMBER_ADD_FAILED" error:
1. The user is banned from the chat. If the user you are trying to add has been restricted from participating in the chat, the Telegram API will automatically reject the addition request.
2. You lack the necessary rights. In some chats, only administrators have the right to add new members. If your account does not have those privileges, the addition will fail.
3. The chat has reached its participant limit. Telegram has restrictions on the maximum number of participants in chats and channels, and if this limit is reached, the API will return an error.
Solution for the "CHAT_MEMBER_ADD_FAILED" error:
1. Check the user's status. Make sure the user is not banned from the chat and does not have any restrictions on being added.
2. Check your permissions. Ensure that your account has the rights to add members to the chat. If you are not an administrator, the addition request will not go through.
3. Check Telegram limits. If the chat has already reached the maximum number of participants, you will either need to remove someone or use another chat to add new members.
The "CHAT_MEMBER_ADD_FAILED" error indicates issues with permissions or chat limitations. Checking the user's status and your access rights will help resolve the problem.