---
title: kAudioUnitClumpID_System
framework: audiotoolbox
role: symbol
role_heading: Global Variable
path: audiotoolbox/kaudiounitclumpid_system
---

# kAudioUnitClumpID_System

Reserved for system use. Use clump ID values other than 0.

## Declaration

```swift
var kAudioUnitClumpID_System: Int { get }
```