---
title: NSURLErrorKey
framework: foundation
role: symbol
role_heading: Global Variable
path: foundation/nsurlerrorkey
---

# NSURLErrorKey

The corresponding value is an NSURL object.

## Declaration

```swift
let NSURLErrorKey: String
```

## See Also

### Constants

- [NSFilePathErrorKey](foundation/nsfilepatherrorkey.md)
- [NSHelpAnchorErrorKey](foundation/nshelpanchorerrorkey.md)
- [NSLocalizedDescriptionKey](foundation/nslocalizeddescriptionkey.md)
- [NSLocalizedFailureErrorKey](foundation/nslocalizedfailureerrorkey.md)
- [NSLocalizedFailureReasonErrorKey](foundation/nslocalizedfailurereasonerrorkey.md)
- [NSLocalizedRecoveryOptionsErrorKey](foundation/nslocalizedrecoveryoptionserrorkey.md)
- [NSLocalizedRecoverySuggestionErrorKey](foundation/nslocalizedrecoverysuggestionerrorkey.md)
- [NSRecoveryAttempterErrorKey](foundation/nsrecoveryattemptererrorkey.md)
- [NSStringEncodingErrorKey](foundation/nsstringencodingerrorkey.md)
- [NSUnderlyingErrorKey](foundation/nsunderlyingerrorkey.md)
- [NSDebugDescriptionErrorKey](foundation/nsdebugdescriptionerrorkey.md)
- [NSMultipleUnderlyingErrorsKey](foundation/nsmultipleunderlyingerrorskey.md)