键盘读取SMS OTP的正确格式是什么?的iOS

At first, I have a same problem as this question How to show verification code suggestion on keyboard from Message, then when I received a message containing Your one time password is 123456, the passcode was suggested in my keypad, the case is, I don't know what is the proper format of the sms that I need to received, where can I see the certain documentation or rules and instructions for the readable sms OTP?

在我给定的链接中,他们提供了视频链接,但是由于某些个人原因,我看不到它。