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

# objectKey

A key whose value is the object that caused the error.

## Declaration

```swift
static let objectKey: CLSErrorUserInfoKey
```

## See Also

### Keys

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