---
title: parentActivityIdentifier
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/oslogentryactivity/parentactivityidentifier
---

# parentActivityIdentifier

The identifier of the parent activity.

## Declaration

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