---
title: messageID
framework: coremidi
role: symbol
role_heading: Instance Property
path: coremidi/midiioerrornotification/messageid
---

# messageID

The type of message.

## Declaration

```swift
var messageID: MIDINotificationMessageID
```

## See Also

### Inspecting an error notification

- [messageSize](coremidi/midiioerrornotification/messagesize.md)
- [driverDevice](coremidi/midiioerrornotification/driverdevice.md)
- [errorCode](coremidi/midiioerrornotification/errorcode.md)