---
title: isValid
framework: usdkit
role: symbol
role_heading: Instance Property
path: usdkit/usdstage-4sfi1/object/isvalid
---

# isValid

A Boolean value indicating whether this object is valid.

## Declaration

```swift
var isValid: Bool { get }
```

## Discussion

Discussion An object’s validity is connected to a USDStage. An object becomes invalid when the lifetime of its stage ends. An object will also expire if its stage no longer defines a value for the object. isValid is false if this object has expired.