---
title: "cancel(error:)"
framework: accessorytransportextension
role: symbol
role_heading: Instance Method
path: "accessorytransportextension/accessorysecuritysession/cancel(error:)"
---

# cancel(error:)

Cancels the security session.

## Declaration

```swift
func cancel(error: AccessorySecuritySession.Error?)
```

## Parameters

- `error`: An optional error that indicates the reason for cancellation.

## See Also

### Managing the session life cycle

- [sendSecurityMessage(_:)](accessorytransportextension/accessorysecuritysession/sendsecuritymessage(_:).md)