---
title: ContactProviderError.extensionNotFound
framework: ContactProvider
role: symbol
role_heading: Case
platforms: [iOS 18.0+, iPadOS 18.0+]
path: contactprovider/contactprovidererror/extensionnotfound
---

# ContactProviderError.extensionNotFound

The framework couldn’t discover the app’s extension.

## Declaration

```swift
case extensionNotFound
```