The most crucial step! Enable "Wireless Debugging" on your Apple TV. On Apple TV: Go to Settings → Remotes and Devices → Remote Apps and Devices Keep this interface open. Your Apple TV will automatically enter "Waiting to Pair" mode. (A message will appear on screen: "Ready to connect using Xcode or Apple Configurator") Do not exit this screen! Otherwise, Xcode won't be able to detect the device.

【Apple TV 4K (3rd generation)】 If you have a physical Apple TV, please follow these steps: Connect the device Open Xcode → Window → Devices and Simulators Ensure your Apple TV and Mac are on the same Wi-Fi network Click the "+" at the bottom left → "Pair Apple TV" Enter the pairing code displayed on your Apple TV as prompted Once completed, your Apple TV will appear in Xcode's device list Re-enable Xcode signing Select your tvOS target Open Signing & Capabilities Check "Automatically manage signing" Select your Team (developer account) Xcode will automatically: Register com.********.tv with Apple Create a tvOS Development Provisioning Profile Bind it to the Apple TV you just connected Issue resolved – Xcode will no longer report errors.

I figured it out! When Xcode performs Automatic Signing, it: Communicates with the Apple Developer Center; Searches for registered devices under the account; Automatically generates or updates the corresponding Provisioning Profile. If there is no Apple TV (tvOS device) in the account, Xcode will fail because: Apple requires that development profiles must be bound to at least one physical device.

https://docs.getui.com/getui/mobile/ios/apns/ refer to this website Create a P12 certificate and upload it to Firebase Create Firebase with multiple server keys and use Testflight for notifications