---
title: domain
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/nserror/domain
---

# domain

A string containing the error domain.

## Declaration

```swift
var domain: String { get }
```

## See Also

### Related Documentation

- [localizedDescription](foundation/nserror/localizeddescription.md)

### Getting Error Properties

- [code](foundation/nserror/code.md)
- [userInfo](foundation/nserror/userinfo.md)