---
title: required
framework: uikit
role: symbol
role_heading: Type Property
path: uikit/uilayoutpriority/required
---

# required

A required constraint.

## Declaration

```swift
static var required: UILayoutPriority { get }
```

## Discussion

Discussion Don’t specify a layout constraint that exceeds this number.

## See Also

### Constants

- [defaultHigh](uikit/uilayoutpriority/defaulthigh.md)
- [dragThatCanResizeScene](uikit/uilayoutpriority/dragthatcanresizescene.md)
- [sceneSizeStayPut](uikit/uilayoutpriority/scenesizestayput.md)
- [dragThatCannotResizeScene](uikit/uilayoutpriority/dragthatcannotresizescene.md)
- [defaultLow](uikit/uilayoutpriority/defaultlow.md)
- [fittingSizeLevel](uikit/uilayoutpriority/fittingsizelevel.md)