---
title: domainIdentifier
framework: fileproviderui
role: symbol
role_heading: Instance Property
path: fileproviderui/fpuiactionextensioncontext/domainidentifier
---

# domainIdentifier

The identifier for the domain managed by the current file provider.

## Declaration

```swift
var domainIdentifier: NSFileProviderDomainIdentifier? { get }
```

## See Also

### Identifying the Domain

- [NSFileProviderDomainIdentifier](fileprovider/nsfileproviderdomainidentifier.md)