---
title: SpatialPreviewSessionError
framework: spatialpreview
role: symbol
role_heading: Enumeration
path: spatialpreview/spatialpreviewsessionerror
---

# SpatialPreviewSessionError

## Declaration

```swift
enum SpatialPreviewSessionError
```

## Topics

### Enumeration Cases

- [SpatialPreviewSessionError.invalidSpatialPreviewEndpoint](spatialpreview/spatialpreviewsessionerror/invalidspatialpreviewendpoint.md)
- [SpatialPreviewSessionError.invalidated](spatialpreview/spatialpreviewsessionerror/invalidated.md)
- [SpatialPreviewSessionError.tooManySessions](spatialpreview/spatialpreviewsessionerror/toomanysessions.md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Error](swift/error.md)
- [Escapable](swift/escapable.md)
- [Hashable](swift/hashable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Session state and errors

- [SpatialPreviewSessionState](spatialpreview/spatialpreviewsessionstate.md)
- [ConnectedSpatialEndpointObserver.UnavailableError](spatialpreview/connectedspatialendpointobserver/unavailableerror.md)
- [USDPreviewSession.Error](spatialpreview/usdpreviewsession/error.md)
- [USDPreviewSession.Event](spatialpreview/usdpreviewsession/event.md)