---
title: CLSErrorUserInfoKey
framework: ClassKit
role: symbol
role_heading: Structure
platforms: [iOS 11.3+, iPadOS 11.3+, Mac Catalyst 11.3+, macOS 11.0+, visionOS 1.0+]
path: classkit/clserroruserinfokey
---

# CLSErrorUserInfoKey

Keys that appear in the user info dictionary in errors that ClassKit creates.

## Declaration

```swift
struct CLSErrorUserInfoKey
```

## Topics

### Keys

- [objectKey](classkit/clserroruserinfokey/objectkey.md)
- [successfulObjectsKey](classkit/clserroruserinfokey/successfulobjectskey.md)
- [underlyingErrorsKey](classkit/clserroruserinfokey/underlyingerrorskey.md)

### Initializers

- [init(_:)](classkit/clserroruserinfokey/init(_:).md)
- [init(rawValue:)](classkit/clserroruserinfokey/init(rawvalue:).md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Errors

- [CLSError](classkit/clserror.md)
- [CLSErrorCodeDomain](classkit/clserrorcodedomain.md)
- [CLSError.Code](classkit/clserror/code.md)