---
title: signatureInvalid
framework: shazamkit
role: symbol
role_heading: Type Property
path: shazamkit/sherror/signatureinvalid
---

# signatureInvalid

The error code to indicate that the system is unable to generate a signature from the audio.

## Declaration

```swift
static var signatureInvalid: SHError.Code { get }
```

## Discussion

Discussion The most common cause of this error is silent audio input.

## See Also

### Constants

- [matchAttemptFailed](shazamkit/sherror/matchattemptfailed.md)
- [signatureDurationInvalid](shazamkit/sherror/signaturedurationinvalid.md)
- [invalidAudioFormat](shazamkit/sherror/invalidaudioformat.md)
- [internalError](shazamkit/sherror/internalerror.md)
- [audioDiscontinuity](shazamkit/sherror/audiodiscontinuity.md)
- [customCatalogInvalidURL](shazamkit/sherror/customcataloginvalidurl.md)
- [customCatalogInvalid](shazamkit/sherror/customcataloginvalid.md)
- [mediaItemFetchFailed](shazamkit/sherror/mediaitemfetchfailed.md)
- [mediaLibrarySyncFailed](shazamkit/sherror/medialibrarysyncfailed.md)