---
title: containerAppLaunchRequestIDKey
framework: LiveCommunicationKit
role: symbol
role_heading: Type Property
platforms: [iOS 27.2+, iPadOS 27.2+, Mac Catalyst 27.2+, macOS 27.2+, visionOS 27.2+]
path: livecommunicationkit/liveassistance/containerapplaunchrequestidkey
---

# containerAppLaunchRequestIDKey

A key the container app uses to retrieve a unique identifier for the live assistance request.

## Declaration

```swift
static let containerAppLaunchRequestIDKey: String
```

## Discussion

Discussion When launched with the user activity type containerAppLaunchReasonKey, your app retrieves this key from the userInfo dictionary of the NSUserActivity received by the launch method. After your container app finishes performing sign-in or collecting any needed information from the person using the service, your app sends the request id to returnToCall(requestID:) to return to the FaceTime call and allow your app extension to finish setting up the live assistance service.

## See Also

### Responding to a container app launch

- [containerAppLaunchActivityType](livecommunicationkit/liveassistance/containerapplaunchactivitytype.md)
- [containerAppLaunchReasonKey](livecommunicationkit/liveassistance/containerapplaunchreasonkey.md)
- [LiveAssistanceLaunchReason](livecommunicationkit/liveassistancelaunchreason.md)