---
title: NERelayClientErrorDomain
framework: Network Extension
role: symbol
role_heading: Global Variable
platforms: [iOS 18.0+, iPadOS 18.0+, Mac Catalyst 18.0+, macOS 15.0+, tvOS 18.0+, visionOS 2.0+]
path: networkextension/nerelayclienterrordomain
---

# NERelayClientErrorDomain

## Declaration

```swift
let NERelayClientErrorDomain: String
```