---
title: sourceDescription
framework: uikit
role: symbol
role_heading: Instance Property
path: uikit/uieventattribution/sourcedescription
---

# sourceDescription

A string describing the source tapped to launch the external link.

## Declaration

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

## Discussion

Discussion This property contains a description of the attribution source. For example, for an ad, sourceDescription describes the content of the advertisement that the user tapped. The system may truncate this field if it’s longer than 100 characters.

## See Also

### Setting attribution details

- [destinationURL](uikit/uieventattribution/destinationurl.md)
- [purchaser](uikit/uieventattribution/purchaser.md)
- [reportEndpoint](uikit/uieventattribution/reportendpoint.md)
- [sourceIdentifier](uikit/uieventattribution/sourceidentifier.md)