---
title: MusicUnderstandingError.sessionInProgress
framework: musicunderstanding
role: symbol
role_heading: Case
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+, watchOS 27.0+]
path: musicunderstanding/musicunderstandingerror/sessioninprogress
---

# MusicUnderstandingError.sessionInProgress

The error that occurs when someone requests analysis while a session is already in progress.

## Declaration

```swift
case sessionInProgress
```

## See Also

### Types of error cases

- [MusicUnderstandingError.emptyAnalysisSet](musicunderstanding/musicunderstandingerror/emptyanalysisset.md)
- [MusicUnderstandingError.internalError](musicunderstanding/musicunderstandingerror/internalerror.md)
- [MusicUnderstandingError.invalidAsset](musicunderstanding/musicunderstandingerror/invalidasset.md)