---
title: unsupportedManifestVersion
framework: webkit
role: symbol
role_heading: Type Property
path: webkit/wkwebextension/error/unsupportedmanifestversion
---

# unsupportedManifestVersion

Indicates that the manifest version is not supported.

## Declaration

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