---
title: conversationIdentifier
framework: carplay
role: symbol
role_heading: Instance Property
path: carplay/cpmessagelistitem/conversationidentifier
---

# conversationIdentifier

The conversation’s unique identifier.

## Declaration

```swift
var conversationIdentifier: String? { get set }
```

## Discussion

Discussion Provide the value that your app uses to identify the conversation. Siri passes this value to your app when the user selects the list item so that you can take any necessary action, such as, updating your message store to mark the conversation as read. CarPlay doesn’t display this value to the user.

## See Also

### Managing the Message Context

- [phoneOrEmailAddress](carplay/cpmessagelistitem/phoneoremailaddress.md)