---
title: identifier
framework: uikit
role: symbol
role_heading: Instance Property
path: uikit/uiusernotificationaction/identifier
---

# identifier

The string that you use internally to identify the action.

## Declaration

```swift
var identifier: String? { get }
```

## Discussion

Discussion The system passes this string to the application(_:handleActionWithIdentifier:for:completionHandler:) or application(_:handleActionWithIdentifier:forRemoteNotification:completionHandler:) method of the app delegate when the user chooses the action.

## See Also

### Getting the action information

- [title](uikit/uiusernotificationaction/title.md)