---
title: sourceVersion
framework: appmigrationkit
role: symbol
role_heading: Instance Property
path: appmigrationkit/resourcesimportrequest/sourceversion
---

# sourceVersion

The data format version provided by the source application.

## Declaration

```swift
let sourceVersion: String
```

## Discussion

Discussion Use this value to distinguish between potentially incompatible versions of the app’s data.

## See Also

### Inspecting import request properties

- [sourceAppIdentifier](appmigrationkit/resourcesimportrequest/sourceappidentifier.md)
- [MigrationAppIdentifier](appmigrationkit/migrationappidentifier.md)