---
title: documentIdentifier
framework: identitydocumentservices
role: symbol
role_heading: Instance Property
path: identitydocumentservices/identitydocumentregistration/documentidentifier
---

# documentIdentifier

An identifier that uniquely refers to the required document.

## Declaration

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

## Discussion

Discussion Use this identifier to link the registration to the stored document in your app.