---
title: CXErrorCodeNotificationServiceExtensionError
framework: callkit
role: symbol
role_heading: Structure
path: callkit/cxerrorcodenotificationserviceextensionerror-swift.struct
---

# CXErrorCodeNotificationServiceExtensionError

Errors that can occur when reporting new, incoming VoIP calls.

## Declaration

```swift
struct CXErrorCodeNotificationServiceExtensionError
```

## Overview

Overview The system can return these errors to the reportNewIncomingVoIPPushPayload(_:completion:) method’s completion handler.

## Topics

### Understanding Error Codes

- [invalidClientProcess](callkit/cxerrorcodenotificationserviceextensionerror-swift.struct/invalidclientprocess.md)
- [missingNotificationFilteringEntitlement](callkit/cxerrorcodenotificationserviceextensionerror-swift.struct/missingnotificationfilteringentitlement.md)
- [unknown](callkit/cxerrorcodenotificationserviceextensionerror-swift.struct/unknown.md)
- [CXErrorCodeNotificationServiceExtensionError.Code](callkit/cxerrorcodenotificationserviceextensionerror-swift.struct/code.md)

### Type Properties

- [errorDomain](callkit/cxerrorcodenotificationserviceextensionerror-swift.struct/errordomain.md)

## Relationships

### Conforms To

- [CustomNSError](foundation/customnserror.md)
- [Equatable](swift/equatable.md)
- [Error](swift/error.md)
- [Hashable](swift/hashable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Handling Errors

- [CXCallEndedReason](callkit/cxcallendedreason.md)
- [CXError](callkit/cxerror.md)
- [CXError.Code](callkit/cxerror/code.md)
- [CXErrorCodeIncomingCallError](callkit/cxerrorcodeincomingcallerror-swift.struct.md)
- [CXErrorCodeIncomingCallError.Code](callkit/cxerrorcodeincomingcallerror-swift.struct/code.md)
- [CXErrorDomain](callkit/cxerrordomain.md)
- [CXErrorDomainIncomingCall](callkit/cxerrordomainincomingcall.md)