---
title: sourceAppUniqueIdentifier
framework: networkextension
role: symbol
role_heading: Instance Property
path: networkextension/neflowmetadata/sourceappuniqueidentifier
---

# sourceAppUniqueIdentifier

A data instance that contains a unique hash value for the source application.

## Declaration

```swift
var sourceAppUniqueIdentifier: Data { get }
```

## Discussion

Discussion The property contains the Code Directory Hash for the application. note: The property’s value changes between different versions of an application.

## See Also

### Getting source app information

- [sourceAppSigningIdentifier](networkextension/neflowmetadata/sourceappsigningidentifier.md)
- [sourceAppAuditToken](networkextension/neflowmetadata/sourceappaudittoken.md)