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# AccessoryError.coordinationTimeout

An error that indicates alert coordination timed out.

```
case coordinationTimeout
```

## Discussion

The system sets a timeout to determine whether an accessory successfully alerts for a notification. The system generates this error if your accessory doesn’t return from [`addNotification(_:alertingContext:)`](/documentation/AccessoryNotifications/NotificationsForwarding/AccessoryNotificationsHandler/addNotification(_:alertingContext:)) within the timeout.

---

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