Existing Amazon Pinpoint resources can be used with Amplify Push Notifications by configuring `amplifyconfiguration.dart` with **Application ID** and **Region**.

```dart
{
  "notifications": {
    "plugins": {
      "awsPinpointPushNotificationsPlugin": {
        "appId": "<app-id>",
        "region": "<region>"
      }
    }
  }
}
```

- **appId**: Amazon Pinpoint application ID
- **region**: AWS Region where the resources are provisioned (e.g. `us-east-1`)