---
title: ASError.Code.extensionNotFound
framework: AccessorySetupKit
role: symbol
role_heading: Case
platforms: [iOS 18.0+, iPadOS 18.0+]
path: accessorysetupkit/aserror/code/extensionnotfound
---

# ASError.Code.extensionNotFound

The framework couldn’t find the app extension.

## Declaration

```swift
case extensionNotFound
```

## See Also

### Configuration errors

- [ASError.Code.userRestricted](accessorysetupkit/aserror/code/userrestricted.md)
- [ASError.Code.invalidRequest](accessorysetupkit/aserror/code/invalidrequest.md)