---
title: ShaderGraph.NodeDefinition.Availability.unavailable
framework: realitykit
role: symbol
role_heading: Case
platforms: [iOS 27.0+, iPadOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: realitykit/shadergraph/nodedefinition/availability-swift.enum/unavailable
---

# ShaderGraph.NodeDefinition.Availability.unavailable

## Declaration

```swift
case unavailable
```