Telegram Bot HandbookHow Message IDs Work
Each Telegram message has an ID. This includes system messages like "A user entered the chat" or "A chat title has changed".
Message IDs in supergroups and channels are unique per chat: the first chat message has ID 1, the second message has ID 2, and so on.
Messages in personal dialogs and regular groups are numbered consequently: message IDs are counted separately for a user (or a bot.) The first received or sent messages in all PMs and groups has ID 1, the second one has ID 2, and so on.
INFO
A bot can retrieve a message by its ID through Telegram API. Bot API doesn't provide such feature.