Hi Kevin Elliott, Here I'm adding the exact error message that I have got while requesting callkit transaction (Error?) domain: "NSCocoaErrorDomain" - code: 4097 { _userInfo = 0x000000012782a220 1 key/value pair { [0] = { key = 0x00000001f9af9c30 "NSDebugDescription" value = 0x0000000114f76d80 "connection to service with pid 144 named com.apple.callkit.callcontrollerhost" } } } And error's description is Couldn't communicate with a helper application. Please check and let us know if any further information needed. Thanks & Regards, Kishore

Hi Kevin Elliott, Have got this error response while trying CXSetTranslatingCallAction transaction as like in code snippet attached. In that callController.request(transaction) throws this error callController.request(transaction) { error in }