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# CTFontManagerError

Errors that prevent unregistration of fonts for a specified font file URL.

```
enum CTFontManagerError
```

## Topics

### Constants

[`CTFontManagerError.fileNotFound`](/documentation/CoreText/CTFontManagerError/fileNotFound)

An error that indicates the file doesn’t exist at the specified URL.

[`CTFontManagerError.insufficientPermissions`](/documentation/CoreText/CTFontManagerError/insufficientPermissions)

An error that indicates insufficient permissions to access the file.

[`CTFontManagerError.unrecognizedFormat`](/documentation/CoreText/CTFontManagerError/unrecognizedFormat)

An error that indicates the file’s format is unrecognized or unsupported.

[`CTFontManagerError.invalidFontData`](/documentation/CoreText/CTFontManagerError/invalidFontData)

An error that indicates the file contains invalid font data that could cause system problems.

[`CTFontManagerError.alreadyRegistered`](/documentation/CoreText/CTFontManagerError/alreadyRegistered)

An error that indicates the file is already registered in the specified scope.

[`CTFontManagerError.exceededResourceLimit`](/documentation/CoreText/CTFontManagerError/exceededResourceLimit)

An error that indicates an operation failure due to a system limitation.

[`CTFontManagerError.assetNotFound`](/documentation/CoreText/CTFontManagerError/assetNotFound)

An error that indicates the asset isn’t found.

[`CTFontManagerError.notRegistered`](/documentation/CoreText/CTFontManagerError/notRegistered)

An error that indicates the file isn’t registered in the specified scope.

[`CTFontManagerError.inUse`](/documentation/CoreText/CTFontManagerError/inUse)

An error that indicates the font file is actively in use and can’t be unregistered.

[`CTFontManagerError.systemRequired`](/documentation/CoreText/CTFontManagerError/systemRequired)

An error that indicates the file is required by the system and can’t be unregistered.

[`CTFontManagerError.registrationFailed`](/documentation/CoreText/CTFontManagerError/registrationFailed)

An error that indicates the file can’t be processed due to an unexpected FontProvider error.

[`CTFontManagerError.missingEntitlement`](/documentation/CoreText/CTFontManagerError/missingEntitlement)

An error that indicates the file can’t be processed because the provider doesn’t have a necessary entitlement.

[`CTFontManagerError.insufficientInfo`](/documentation/CoreText/CTFontManagerError/insufficientInfo)

An error that indicates the font descriptor doesn’t have the necessary information to specify a font file.

[`CTFontManagerError.cancelledByUser`](/documentation/CoreText/CTFontManagerError/cancelledByUser)

An error that indicates the user cancelled the operation.

[`CTFontManagerError.duplicatedName`](/documentation/CoreText/CTFontManagerError/duplicatedName)

An error that indicates the file can’t register because of a duplicate font name.

[`CTFontManagerError.invalidFilePath`](/documentation/CoreText/CTFontManagerError/invalidFilePath)

An error that indicates the file isn’t in an allowed location, which must be either in the app’s bundle or an on-demand resource.

[`CTFontManagerError.unsupportedScope`](/documentation/CoreText/CTFontManagerError/unsupportedScope)

An error that indicates the specified scope isn’t supported.


---

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