---
title: CardSession.Error.transmissionError
framework: corenfc
role: symbol
role_heading: Case
path: corenfc/cardsession/error/transmissionerror
---

# CardSession.Error.transmissionError

The card session experienced a general error transmitting data.

## Declaration

```swift
case transmissionError
```

## Discussion

Discussion If you receive this error, you can retry the transmission if the connection with the NFC reader remains valid.

## See Also

### Card session errors

- [CardSession.Error.invalidated](corenfc/cardsession/error/invalidated.md)
- [CardSession.Error.userInvalidated](corenfc/cardsession/error/userinvalidated.md)
- [CardSession.Error.maxSessionDurationReached](corenfc/cardsession/error/maxsessiondurationreached.md)
- [CardSession.Error.systemNotAvailable](corenfc/cardsession/error/systemnotavailable.md)
- [CardSession.Error.accessNotAccepted](corenfc/cardsession/error/accessnotaccepted.md)
- [CardSession.Error.systemEligibilityFailed](corenfc/cardsession/error/systemeligibilityfailed.md)
- [CardSession.Error.emulationStopped](corenfc/cardsession/error/emulationstopped.md)
- [CardSession.Error.radioDisabled](corenfc/cardsession/error/radiodisabled.md)