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

# AdAttributionKitError.invalidImpressionJWSHeader

The attribution failed due to an invalid JWS header.

## Declaration

```swift
case invalidImpressionJWSHeader
```