---
title: sourceBundleIdentifier
framework: Accessory Live Activities
role: symbol
role_heading: Instance Property
platforms: [iOS 26.5+, iPadOS 26.5+]
path: accessoryliveactivities/accessoryliveactivity/sourcebundleidentifier
---

# sourceBundleIdentifier

The bundle identifier of the app that started the Live Activity.

## Declaration

```swift
let sourceBundleIdentifier: String
```

## See Also

### Identifying the activity

- [activityIdentifier](accessoryliveactivities/accessoryliveactivity/activityidentifier.md)
- [sourceBundleName](accessoryliveactivities/accessoryliveactivity/sourcebundlename.md)