---
title: AdAttributionKitError.impressionExpired
framework: AdAttributionKit
role: symbol
role_heading: Case
platforms: [iOS 17.4+, iPadOS 17.4+, Mac Catalyst 17.4+]
path: adattributionkit/adattributionkiterror/impressionexpired
---

# AdAttributionKitError.impressionExpired

The attribution failed because the impression expired.

## Declaration

```swift
case impressionExpired
```