---
title: SKAdTestError.Code.invalidImpressionId
framework: storekittest
role: symbol
role_heading: Case
path: storekittest/skadtesterror/code/invalidimpressionid
---

# SKAdTestError.Code.invalidImpressionId

The impression ID isn’t a valid UUID string.

## Declaration

```swift
case invalidImpressionId
```

## See Also

### Other Errors

- [SKAdTestError.Code.invalidVersion](storekittest/skadtesterror/code/invalidversion.md)
- [SKAdTestError.Code.invalidSourceAppAdamId](storekittest/skadtesterror/code/invalidsourceappadamid.md)
- [SKAdTestError.Code.invalidSourceDomain](storekittest/skadtesterror/code/invalidsourcedomain.md)
- [SKAdTestError.Code.invalidSourceIdentifier](storekittest/skadtesterror/code/invalidsourceidentifier.md)
- [SKAdTestError.Code.unknownError](storekittest/skadtesterror/code/unknownerror.md)
- [SKAdTestError.Code.invalidVersion](storekittest/skadtesterror/code/invalidversion.md)
- [SKAdTestError.Code.invalidSourceAppAdamId](storekittest/skadtesterror/code/invalidsourceappadamid.md)
- [SKAdTestError.Code.invalidSourceDomain](storekittest/skadtesterror/code/invalidsourcedomain.md)
- [SKAdTestError.Code.invalidSourceIdentifier](storekittest/skadtesterror/code/invalidsourceidentifier.md)
- [SKAdTestError.Code.unknownError](storekittest/skadtesterror/code/unknownerror.md)