---
title: kAudioComponentRegistrationsChangedNotification
framework: audiotoolbox
role: symbol
role_heading: Global Variable
path: audiotoolbox/kaudiocomponentregistrationschangednotification
---

# kAudioComponentRegistrationsChangedNotification

## Declaration

```swift
let kAudioComponentRegistrationsChangedNotification: CFString
```

## See Also

### Constants

- [kAudioComponentConfigurationInfo_ValidationResult](audiotoolbox/kaudiocomponentconfigurationinfo_validationresult.md)
- [kAudioComponentInstanceInvalidationNotification](audiotoolbox/kaudiocomponentinstanceinvalidationnotification.md)
- [kAudioComponentValidationParameter_ForceValidation](audiotoolbox/kaudiocomponentvalidationparameter_forcevalidation.md)
- [kAudioComponentValidationParameter_TimeOut](audiotoolbox/kaudiocomponentvalidationparameter_timeout.md)