---
title: kAudioUnitErr_IllegalInstrument
framework: audiotoolbox
role: symbol
role_heading: Global Variable
path: audiotoolbox/kaudiouniterr_illegalinstrument
---

# kAudioUnitErr_IllegalInstrument

## Declaration

```swift
var kAudioUnitErr_IllegalInstrument: OSStatus { get }
```

## See Also

### Constants

- [kAudioUnitErr_InstrumentTypeNotFound](audiotoolbox/kaudiouniterr_instrumenttypenotfound.md)