---
title: maximumInstancesPerReferenceObject
framework: arkit
role: symbol
role_heading: Instance Property
path: arkit/objecttrackingprovider/trackingconfiguration-swift.struct/maximuminstancesperreferenceobject
---

# maximumInstancesPerReferenceObject

The maximum number of instances of each reference object type to allow tracking at once.

## Declaration

```swift
var maximumInstancesPerReferenceObject: Int
```

## See Also

### Inspecting a tracking configuration

- [detectionRate](arkit/objecttrackingprovider/trackingconfiguration-swift.struct/detectionrate.md)
- [maximumTrackableInstances](arkit/objecttrackingprovider/trackingconfiguration-swift.struct/maximumtrackableinstances.md)
- [movingObjectTrackingRate](arkit/objecttrackingprovider/trackingconfiguration-swift.struct/movingobjecttrackingrate.md)
- [stationaryObjectTrackingRate](arkit/objecttrackingprovider/trackingconfiguration-swift.struct/stationaryobjecttrackingrate.md)