---
title: AdAttributionKitError.invalidImpressionJWSSignature
framework: AdAttributionKit
role: symbol
role_heading: Case
platforms: [iOS 18.0+, iPadOS 18.0+, Mac Catalyst 18.0+]
path: adattributionkit/adattributionkiterror/invalidimpressionjwssignature
---

# AdAttributionKitError.invalidImpressionJWSSignature

The attribution failed due to an invalid JWS signature.

## Declaration

```swift
case invalidImpressionJWSSignature
```