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# HKError.Code

Error codes returned by HealthKit.

```
enum Code
```

## Topics

### Errors

[`HKErrorHealthDataUnavailable`](/documentation/HealthKit/HKError/Code/errorHealthDataUnavailable)

HealthKit accessed on an unsupported device, such as an iPad.

[`HKErrorHealthDataRestricted`](/documentation/HealthKit/HKError/Code/errorHealthDataRestricted)

A Mobile Device Management (MDM) profile restricts the use of HealthKit on this device.

[`HKErrorInvalidArgument`](/documentation/HealthKit/HKError/Code/errorInvalidArgument)

The app passed an invalid argument to the HealthKit API.

[`HKErrorAuthorizationDenied`](/documentation/HealthKit/HKError/Code/errorAuthorizationDenied)

The user hasn’t given the app permission to save data.

[`HKErrorAuthorizationNotDetermined`](/documentation/HealthKit/HKError/Code/errorAuthorizationNotDetermined)

The app hasn’t yet asked the user for the authorization required to complete the task.

[`HKErrorRequiredAuthorizationDenied`](/documentation/HealthKit/HKError/Code/errorRequiredAuthorizationDenied)

The user hasn’t granted the application authorization to access all the required clinical record types.

[`HKErrorDatabaseInaccessible`](/documentation/HealthKit/HKError/Code/errorDatabaseInaccessible)

The HealthKit data is unavailable because it’s protected and the device is locked.

[`HKErrorUserCanceled`](/documentation/HealthKit/HKError/Code/errorUserCanceled)

The user canceled the operation.

[`HKErrorAnotherWorkoutSessionStarted`](/documentation/HealthKit/HKError/Code/errorAnotherWorkoutSessionStarted)

Another app started a workout session.

[`HKErrorUserExitedWorkoutSession`](/documentation/HealthKit/HKError/Code/errorUserExitedWorkoutSession)

The user exited your application while a workout session was running.

[`HKErrorNoData`](/documentation/HealthKit/HKError/Code/errorNoData)

Data is unavailable for the requested query and predicate.

## Relationships

### Conforms To

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

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

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

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

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

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

---

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