---
title: maximalIdentifier
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/locale/language-swift.struct/maximalidentifier
---

# maximalIdentifier

Returns a BCP-47 identifier that always includes the script: “zh-Hant-TW”, “en-Latn-US”

## Declaration

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