---
title: Audio Unit Errors
framework: audiotoolbox
role: collectionGroup
role_heading: API Collection
path: audiotoolbox/1584138-audio-unit-errors
---

# Audio Unit Errors

## Topics

### Errors

- [kAudioComponentErr_InstanceInvalidated](audiotoolbox/kaudiocomponenterr_instanceinvalidated.md)
- [kAudioUnitErr_CannotDoInCurrentContext](audiotoolbox/kaudiouniterr_cannotdoincurrentcontext.md)
- [kAudioUnitErr_FailedInitialization](audiotoolbox/kaudiouniterr_failedinitialization.md)
- [kAudioUnitErr_FileNotSpecified](audiotoolbox/kaudiouniterr_filenotspecified.md)
- [kAudioUnitErr_FormatNotSupported](audiotoolbox/kaudiouniterr_formatnotsupported.md)
- [kAudioUnitErr_Initialized](audiotoolbox/kaudiouniterr_initialized.md)
- [kAudioUnitErr_InvalidElement](audiotoolbox/kaudiouniterr_invalidelement.md)
- [kAudioUnitErr_InvalidFile](audiotoolbox/kaudiouniterr_invalidfile.md)
- [kAudioUnitErr_InvalidOfflineRender](audiotoolbox/kaudiouniterr_invalidofflinerender.md)
- [kAudioUnitErr_InvalidParameter](audiotoolbox/kaudiouniterr_invalidparameter.md)
- [kAudioUnitErr_InvalidProperty](audiotoolbox/kaudiouniterr_invalidproperty.md)
- [kAudioUnitErr_InvalidPropertyValue](audiotoolbox/kaudiouniterr_invalidpropertyvalue.md)
- [kAudioUnitErr_InvalidScope](audiotoolbox/kaudiouniterr_invalidscope.md)
- [kAudioUnitErr_NoConnection](audiotoolbox/kaudiouniterr_noconnection.md)
- [kAudioUnitErr_PropertyNotInUse](audiotoolbox/kaudiouniterr_propertynotinuse.md)
- [kAudioUnitErr_PropertyNotWritable](audiotoolbox/kaudiouniterr_propertynotwritable.md)
- [kAudioUnitErr_TooManyFramesToProcess](audiotoolbox/kaudiouniterr_toomanyframestoprocess.md)
- [kAudioUnitErr_Unauthorized](audiotoolbox/kaudiouniterr_unauthorized.md)
- [kAudioUnitErr_Uninitialized](audiotoolbox/kaudiouniterr_uninitialized.md)
- [kAudioUnitErr_UnknownFileType](audiotoolbox/kaudiouniterr_unknownfiletype.md)
- [kAudioUnitErr_RenderTimeout](audiotoolbox/kaudiouniterr_rendertimeout.md)
- [kAudioComponentErr_InstanceTimedOut](audiotoolbox/kaudiocomponenterr_instancetimedout.md)
- [kAudioUnitErr_ExtensionNotFound](audiotoolbox/kaudiouniterr_extensionnotfound.md)
- [kAudioUnitErr_InvalidFilePath](audiotoolbox/kaudiouniterr_invalidfilepath.md)
- [kAudioUnitErr_InvalidParameterValue](audiotoolbox/kaudiouniterr_invalidparametervalue.md)
- [kAudioUnitErr_MIDIOutputBufferFull](audiotoolbox/kaudiouniterr_midioutputbufferfull.md)
- [kAudioUnitErr_MissingKey](audiotoolbox/kaudiouniterr_missingkey.md)
- [kAudioUnitErr_ComponentManagerNotSupported](audiotoolbox/kaudiouniterr_componentmanagernotsupported.md)

## See Also

### Enumerations

- [Audio Unit Types](audiotoolbox/1584142-audio_unit_types.md)
- [Inter-App Audio Unit Types](audiotoolbox/1619501-inter-app-audio-unit-types.md)
- [Audio Unit Manufacturer Identifier](audiotoolbox/1584143-audio_unit_manufacturer_identifi.md)
- [Audio Unit Output Subtypes](audiotoolbox/1584148-audio-unit-output-subtypes.md)
- [I/O Audio Unit Subtypes](audiotoolbox/1619485-i-o-audio-unit-subtypes.md)
- [Converter Audio Unit Subtypes](audiotoolbox/1584145-converter_audio_unit_subtypes.md)
- [Reserved Audio Unit Clump Identifier](audiotoolbox/1533986-reserved_audio_unit_clump_identi.md)
- [Offline Audio Unit Properties](audiotoolbox/1534054-offline_audio_unit_properties.md)
- [MIDI Audio Unit Parameters](audiotoolbox/1389613-midi_audio_unit_parameters.md)
- [General Audio Unit Function Selectors](audiotoolbox/1584140-general_audio_unit_function_sele.md)
- [Generator Audio Unit Subtypes](audiotoolbox/1619493-generator_audio_unit_subtypes.md)
- [Input/Output Audio Unit Subtypes](audiotoolbox/1584139-input_output_audio_unit_subtypes.md)
- [Audio Unit Panner Subtypes](audiotoolbox/1584151-audio-unit-panner-subtypes.md)
- [Audio Unit Player Subtypes](audiotoolbox/1584155-audio-unit-player-subtypes.md)
- [Audio Unit Pitch Subtypes](audiotoolbox/1584152-audio-unit-pitch-subtypes.md)