I'm starting a new project in Xcode, but the Team ID in the "Signing and Capabilities" section for iOS is different from the one on the website. Is this a problem? Why does Xcode automatically send a different ID when signing?

I am developing a SWIFITUI app that transfers playlists between Apple Music and Spotify but I am not directly create my requests to those companies APIs. I have my own backend. But when fetching users playlists due to "https://api.music.apple.com/v1/me/library/playlists" the response is 403 all the time. I tried many ways including creating new DevToken and UserToken when user login and sending those tokens in headers with Authorization and Music-User-Token. What else can be the problem? Note: My team ids in Xcode and apple developer portal seems different. Maybe this is the problem.