---
title: DCError.Code.unknownSystemFailure
framework: DeviceCheck
role: symbol
role_heading: Case
platforms: [iOS 11.0+, iPadOS 11.0+, Mac Catalyst 13.1+, macOS 10.15+, tvOS 11.0+, visionOS 1.0+, watchOS 9.0+]
path: devicecheck/dcerror-swift.struct/code/unknownsystemfailure
---

# DCError.Code.unknownSystemFailure

A failure has occurred, such as the failure to generate a token.

## Declaration

```swift
case unknownSystemFailure
```

## See Also

### Error codes

- [DCError.Code.featureUnsupported](devicecheck/dcerror-swift.struct/code/featureunsupported.md)
- [DCError.Code.invalidInput](devicecheck/dcerror-swift.struct/code/invalidinput.md)
- [DCError.Code.invalidKey](devicecheck/dcerror-swift.struct/code/invalidkey.md)
- [DCError.Code.serverUnavailable](devicecheck/dcerror-swift.struct/code/serverunavailable.md)