Why can't Apple 14 receive the electronic car key information sent to me by others?

Digital keys can only be sent through iMessage. According to the public information, it is found that the electronic car key can only be sent through iMessage, otherwise Apple 14 will prompt that it cannot receive the car key invitation. Find the IMESSAGE information of the setting information, then click Develop to send information, and check all options of sending and receiving iMessage information in the following ways to send and receive it normally.