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# NSFileProviderVolumeUnsupportedReason

Constants that describe why an external volume might not be eligible for storing a domain.

```
struct NSFileProviderVolumeUnsupportedReason
```

## Topics

### Reasons

[`NSFileProviderVolumeUnsupportedReasonUnknown`](/documentation/FileProvider/NSFileProviderVolumeUnsupportedReason/unknown)

[`NSFileProviderVolumeUnsupportedReasonNonEncrypted`](/documentation/FileProvider/NSFileProviderVolumeUnsupportedReason/nonEncrypted)

[`NSFileProviderVolumeUnsupportedReasonReadOnly`](/documentation/FileProvider/NSFileProviderVolumeUnsupportedReason/readOnly)

[`NSFileProviderVolumeUnsupportedReasonNetwork`](/documentation/FileProvider/NSFileProviderVolumeUnsupportedReason/network)

[`NSFileProviderVolumeUnsupportedReasonQuarantined`](/documentation/FileProvider/NSFileProviderVolumeUnsupportedReason/quarantined)

## Relationships

### Conforms To

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`Equatable`](/documentation/Swift/Equatable)

[`ExpressibleByArrayLiteral`](/documentation/Swift/ExpressibleByArrayLiteral)

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`SetAlgebra`](/documentation/Swift/SetAlgebra)

[`OptionSet`](/documentation/Swift/OptionSet)

[`Sendable`](/documentation/Swift/Sendable)

---

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