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# DeviceActivityData.Error

Errors that may occur when attempting to fetch activity data.

```
enum Error
```

## Topics

### Representing errors

[`case unavailable`](/documentation/DeviceActivity/DeviceActivityData/Error/unavailable)

An error indicating data access is unavailable.

[`case unauthorized`](/documentation/DeviceActivity/DeviceActivityData/Error/unauthorized)

An error indicating the app isn’t authorized to provide parental controls and access data.

[`case missingData`](/documentation/DeviceActivity/DeviceActivityData/Error/missingData)

An error indicating the requested data does not exist.

### Describing errors

[`var errorDescription: String?`](/documentation/DeviceActivity/DeviceActivityData/Error/errorDescription)

A localized message that describes what error occurred.

## Relationships

### Conforms To

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

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

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

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

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

[`LocalizedError`](/documentation/Foundation/LocalizedError)

---

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