---
title: SHError.Code.signatureInvalid
framework: shazamkit
role: symbol
role_heading: Case
path: shazamkit/sherror/code/signatureinvalid
---

# SHError.Code.signatureInvalid

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

## Declaration

```swift
case signatureInvalid
```

## Discussion

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

## See Also

### Signature errors

- [SHError.Code.signatureDurationInvalid](shazamkit/sherror/code/signaturedurationinvalid.md)