---
title: ImageAnalysisOverlayView.SubjectUnavailable
framework: visionkit
role: symbol
role_heading: Enumeration
path: visionkit/imageanalysisoverlayview/subjectunavailable
---

# ImageAnalysisOverlayView.SubjectUnavailable

Error conditions that can occur during subject analysis.

## Declaration

```swift
enum SubjectUnavailable
```

## Overview

Overview This enumeration contains a failure ImageAnalysisOverlayView.SubjectUnavailable.imageUnavailable that can occur when the ImageAnalysisOverlayView.Subject property image fails to produce a result.

## Topics

### Enumeration Cases

- [ImageAnalysisOverlayView.SubjectUnavailable.imageUnavailable](visionkit/imageanalysisoverlayview/subjectunavailable/imageunavailable.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)