1. Sign on to the Apple Certificates, Identifiers & Profiles page with an Apple Developer administrator account.
  2. On the Identifiers screen, next to the Identifiers heading, click Add (+).
  3. On the Register a new identifier screen, select App IDs. Click Continue.
  4. Select App. Click Continue.
  5. On the Register an App ID screen, in the Description field, enter a description for your application.
  6. In the Bundle ID field, enter a name for your application, such as com.example.mywebapp.
  7. In the Capabilities section, select Sign in with Apple. Click Continue.
  8. On the Confirm your App ID screen, under App ID Prefix, note your Team ID, such as "3R6RFC464N". You will use this in Configuring an adapter instance. Click Register.