---
title: kAudioFileStreamError_IllegalOperation
framework: audiotoolbox
role: symbol
role_heading: Global Variable
path: audiotoolbox/kaudiofilestreamerror_illegaloperation
---

# kAudioFileStreamError_IllegalOperation

An illegal operation was attempted.

## Declaration

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

## See Also

### Result Codes

- [Audio File Errors](audiotoolbox/1576500-audio-file-errors.md)
- [kAudioFileStreamError_UnsupportedFileType](audiotoolbox/kaudiofilestreamerror_unsupportedfiletype.md)
- [kAudioFileStreamError_UnsupportedDataFormat](audiotoolbox/kaudiofilestreamerror_unsupporteddataformat.md)
- [kAudioFileStreamError_UnsupportedProperty](audiotoolbox/kaudiofilestreamerror_unsupportedproperty.md)
- [kAudioFileStreamError_BadPropertySize](audiotoolbox/kaudiofilestreamerror_badpropertysize.md)
- [kAudioFileStreamError_NotOptimized](audiotoolbox/kaudiofilestreamerror_notoptimized.md)
- [kAudioFileStreamError_InvalidPacketOffset](audiotoolbox/kaudiofilestreamerror_invalidpacketoffset.md)
- [kAudioFileStreamError_InvalidFile](audiotoolbox/kaudiofilestreamerror_invalidfile.md)
- [kAudioFileStreamError_ValueUnknown](audiotoolbox/kaudiofilestreamerror_valueunknown.md)
- [kAudioFileStreamError_DataUnavailable](audiotoolbox/kaudiofilestreamerror_dataunavailable.md)
- [kAudioFileStreamError_UnspecifiedError](audiotoolbox/kaudiofilestreamerror_unspecifiederror.md)
- [kAudioFileStreamError_DiscontinuityCantRecover](audiotoolbox/kaudiofilestreamerror_discontinuitycantrecover.md)