---
title: invalidBackgroundPersistence
framework: webkit
role: symbol
role_heading: Type Property
path: webkit/wkwebextension/error/invalidbackgroundpersistence
---

# invalidBackgroundPersistence

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

## Declaration

```swift
static var invalidBackgroundPersistence: WKWebExtension.Error.Code { get }
```