---
title: clientIdentifier
framework: translation
role: symbol
role_heading: Instance Property
path: translation/translationsession/request/clientidentifier
---

# clientIdentifier

An optional unique identifier to associate a translation request with its response.

## Declaration

```swift
var clientIdentifier: String?
```

## Discussion

Discussion When you set this identifier, it returns the same value in the corresponding TranslationSession.Response.