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

# clientIdentifier

The unique identifier matching the client identifier set in the translation request.

## Declaration

```swift
let clientIdentifier: String?
```

## Discussion

Discussion Use this identifier to associate a translation request with its response. If you set a client identifier in the translation request, that same identifier returns in the response. If the request contained no identifier, this value is nil.

## See Also

### Getting translation details

- [sourceLanguage](translation/translationsession/response/sourcelanguage.md)
- [targetLanguage](translation/translationsession/response/targetlanguage.md)