---
title: Error constants
framework: passkit
role: collectionGroup
role_heading: API Collection
path: passkit/error-constants
---

# Error constants

Error code constants for identity operations.

## Topics

### Constants

- [cancelled](passkit/pkidentityerror-swift.struct/cancelled.md)
- [invalidElement](passkit/pkidentityerror-swift.struct/invalidelement.md)
- [invalidNonce](passkit/pkidentityerror-swift.struct/invalidnonce.md)
- [notSupported](passkit/pkidentityerror-swift.struct/notsupported.md)
- [networkUnavailable](passkit/pkidentityerror-swift.struct/networkunavailable.md)
- [noElementsRequested](passkit/pkidentityerror-swift.struct/noelementsrequested.md)
- [requestAlreadyInProgress](passkit/pkidentityerror-swift.struct/requestalreadyinprogress.md)
- [unknown](passkit/pkidentityerror-swift.struct/unknown.md)

## See Also

### Inspecting an error

- [errorDomain](passkit/pkidentityerror-swift.struct/errordomain.md)
- [PKIdentityError.Code](passkit/pkidentityerror-swift.struct/code.md)
- [errorCode](foundation/customnserror/errorcode-2opgi.md)
- [errorUserInfo](foundation/customnserror/erroruserinfo-1aas5.md)