---
title: identifier
framework: accessorynotifications
role: symbol
role_heading: Instance Property
path: accessorynotifications/accessorynotification/identifier-swift.property
---

# identifier

A structure that uniquely identifies the notification.

## Declaration

```swift
let identifier: AccessoryNotification.Identifier
```

## Discussion

Discussion This structure combines the source app’s bundle identifier (sourceIdentifier) with an app-provided notification identifier (notificationIdentifier).

## See Also

### Identifying and grouping notifications

- [AccessoryNotification.Identifier](accessorynotifications/accessorynotification/identifier-swift.struct.md)
- [threadIdentifier](accessorynotifications/accessorynotification/threadidentifier.md)
- [sourceName](accessorynotifications/accessorynotification/sourcename.md)