---
title: identifier
framework: usdkit
role: symbol
role_heading: Instance Property
path: usdkit/usdlayer/identifier
---

# identifier

The layer’s identifier — typically a file path, URL, or anonymous identifier string. Identifies the layer in OpenUSD’s global registry.

## Declaration

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

## See Also

### Inspecting identity and state

- [resolvedPath](usdkit/usdlayer/resolvedpath.md)
- [displayName](usdkit/usdlayer/displayname.md)
- [isAnonymous](usdkit/usdlayer/isanonymous.md)
- [isValid](usdkit/usdlayer/isvalid.md)
- [isDirty](usdkit/usdlayer/isdirty.md)
- [isMuted](usdkit/usdlayer/ismuted.md)