---
title: maxSysExSize
framework: coremidi
role: symbol
role_heading: Instance Property
path: coremidi/midicisession/maxsysexsize
---

# maxSysExSize

The maximum size of System Exclusive (SysEx) messages.

## Declaration

```swift
var maxSysExSize: NSNumber { get }
```

## See Also

### Inspecting a Session

- [deviceInfo](coremidi/midicisession/deviceinfo.md)
- [midiDestination](coremidi/midicisession/mididestination.md)
- [maxPropertyRequests](coremidi/midicisession/maxpropertyrequests.md)
- [supportsProfileCapability](coremidi/midicisession/supportsprofilecapability.md)
- [supportsPropertyCapability](coremidi/midicisession/supportspropertycapability.md)