---
title: NEFilterErrorDomain
framework: networkextension
role: symbol
role_heading: Global Variable
path: networkextension/nefiltererrordomain
---

# NEFilterErrorDomain

The domain for errors resulting from calls to the filter manager.

## Declaration

```swift
let NEFilterErrorDomain: String
```

## Discussion

Discussion Match this constant to the domain of an NSError encountered when calling methods on NEFilterManager. The NEFilterManagerError enumeration defines possible code values for these errors.

## See Also

### Errors

- [NEFilterManagerError](networkextension/nefiltermanagererror.md)