<!--
{
  "availability" : [
    "iOS: 10.0.0 -",
    "iPadOS: 10.0.0 -",
    "macCatalyst: 10.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 9.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "CallKit",
  "identifier" : "/documentation/CallKit/CXErrorCodeRequestTransactionError-swift.struct",
  "metadataVersion" : "0.1.0",
  "role" : "Structure",
  "symbol" : {
    "kind" : "Structure",
    "modules" : [
      "CallKit"
    ],
    "preciseIdentifier" : "s:SC34CXErrorCodeRequestTransactionErrorLeV"
  },
  "title" : "CXErrorCodeRequestTransactionError"
}
-->

# CXErrorCodeRequestTransactionError

```
struct CXErrorCodeRequestTransactionError
```

## Topics

### Properties

### Constants

[`unknown`](/documentation/CallKit/CXErrorCodeRequestTransactionError-swift.struct/unknown)

An unknown error occurred.

[`unentitled`](/documentation/CallKit/CXErrorCodeRequestTransactionError-swift.struct/unentitled)

The app doesn’t have the entitlement to perform the actions in the requested transaction.

[`unknownCallProvider`](/documentation/CallKit/CXErrorCodeRequestTransactionError-swift.struct/unknownCallProvider)

The controller can’t find a call provider to perform the actions in the requested transaction.

[`emptyTransaction`](/documentation/CallKit/CXErrorCodeRequestTransactionError-swift.struct/emptyTransaction)

The requested transaction doesn’t contain any actions.

[`unknownCallUUID`](/documentation/CallKit/CXErrorCodeRequestTransactionError-swift.struct/unknownCallUUID)

The requested transaction contains call actions that reference an unknown UUID.

[`callUUIDAlreadyExists`](/documentation/CallKit/CXErrorCodeRequestTransactionError-swift.struct/callUUIDAlreadyExists)

The requested transaction contains call actions that reference a UUID that already exists.

[`invalidAction`](/documentation/CallKit/CXErrorCodeRequestTransactionError-swift.struct/invalidAction)

The requested transaction contains an invalid action.

[`maximumCallGroupsReached`](/documentation/CallKit/CXErrorCodeRequestTransactionError-swift.struct/maximumCallGroupsReached)

Performing the requested transaction exceeds the maximum number of call groups for the provider.

### Operators

### Enumerations

[`CXErrorCodeRequestTransactionError.Code`](/documentation/CallKit/CXErrorCodeRequestTransactionError-swift.struct/Code)

Error codes for the CallKit error domain.


---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)