---
title: kCFMessagePortBecameInvalidError
framework: corefoundation
role: symbol
role_heading: Global Variable
path: corefoundation/kcfmessageportbecameinvaliderror
---

# kCFMessagePortBecameInvalidError

The message port was invalidated.

## Declaration

```swift
var kCFMessagePortBecameInvalidError: Int32 { get }
```

## See Also

### Constants

- [kCFMessagePortSuccess](corefoundation/kcfmessageportsuccess.md)
- [kCFMessagePortSendTimeout](corefoundation/kcfmessageportsendtimeout.md)
- [kCFMessagePortReceiveTimeout](corefoundation/kcfmessageportreceivetimeout.md)
- [kCFMessagePortIsInvalid](corefoundation/kcfmessageportisinvalid.md)
- [kCFMessagePortTransportError](corefoundation/kcfmessageporttransporterror.md)