---
title: WKWebExtension.Error.Code.invalidBackgroundPersistence
framework: webkit
role: symbol
role_heading: Case
path: webkit/wkwebextension/error/code/invalidbackgroundpersistence
---

# WKWebExtension.Error.Code.invalidBackgroundPersistence

Indicates that the extension specified background persistence that was not compatible with the platform or features requested.

## Declaration

```swift
case invalidBackgroundPersistence
```