---
title: activityIdentifier
framework: OSLog
role: symbol
role_heading: Instance Property
platforms: [iOS 15.0+, iPadOS 15.0+, Mac Catalyst 15.0+, macOS 10.15+, tvOS 15.0+, visionOS 1.0+, watchOS 8.0+]
path: oslog/oslogentryfromprocess/activityidentifier
---

# activityIdentifier

The activity identifier associated with the entry.

## Declaration

```swift
var activityIdentifier: os_activity_id_t { get }
```

## See Also

### Identifying the Process Source

- [process](oslog/oslogentryfromprocess/process.md)
- [processIdentifier](oslog/oslogentryfromprocess/processidentifier.md)
- [sender](oslog/oslogentryfromprocess/sender.md)
- [threadIdentifier](oslog/oslogentryfromprocess/threadidentifier.md)