---
title: signatureMissingNonce
framework: storekittest
role: symbol
role_heading: Type Property
path: storekittest/skadtesterror/signaturemissingnonce
---

# signatureMissingNonce

The signature is missing the nonce, in the testing environment.

## Declaration

```swift
static var signatureMissingNonce: SKAdTestError.Code { get }
```

## Discussion

Discussion Be sure to include a nonce when you create and validate an ad impression in the testing environment.

## See Also

### Getting Signature Errors

- [missingSignature](storekittest/skadtesterror/missingsignature.md)
- [signatureInvalidKey](storekittest/skadtesterror/signatureinvalidkey.md)
- [signatureInvalidOrder](storekittest/skadtesterror/signatureinvalidorder.md)
- [signatureMissingAdNetworkId](storekittest/skadtesterror/signaturemissingadnetworkid.md)
- [signatureMissingAppAdamId](storekittest/skadtesterror/signaturemissingappadamid.md)
- [signatureMissingFidelityType](storekittest/skadtesterror/signaturemissingfidelitytype.md)
- [signatureMissingSourceAppAdamId](storekittest/skadtesterror/signaturemissingsourceappadamid.md)
- [signatureMissingSourceDomain](storekittest/skadtesterror/signaturemissingsourcedomain.md)
- [signatureMissingSourceIdentifier](storekittest/skadtesterror/signaturemissingsourceidentifier.md)
- [signatureMissingTimestamp](storekittest/skadtesterror/signaturemissingtimestamp.md)
- [signatureUnknownError](storekittest/skadtesterror/signatureunknownerror.md)
- [signatureVerificationFailed](storekittest/skadtesterror/signatureverificationfailed.md)