Hi Kevin thanks for the response, really appreciate it. am putting the log below, which isgetting on Mac console when app is crashing default 23:17:22.391093-0600 callservicesd Registering client process with bundle identifier for PushKit voip in environment development default 23:17:23.060244-0600 callservicesd XPC PushKit connection invalidated from client default 23:17:23.060353-0600 callservicesd XPC PushKit connection invalidated from client default 23:17:23.060420-0600 callservicesd XPC PushKit connection invalidated from client default 23:17:54.295556-0600 callservicesd Pending PushKit VoIP payload deliveries until a connection exists default 23:17:54.385566-0600 callservicesd Registering client process with bundle identifier for PushKit voip in environment development default 23:17:54.576781-0600 callservicesd Registering client process with bundle identifier for PushKit voip in environment development default 23:17:58.781527-0600 callservicesd Registering client process with bundle identifier for PushKit voip in environment development default 23:18:03.421509-0600 callservicesd XPC PushKit connection invalidated from client default 23:18:03.421550-0600 callservicesd XPC PushKit connection invalidated from client default 23:18:03.422343-0600 callservicesd XPC PushKit connection invalidated from client default 23:24:36.926260-0600 callservicesd Registering client process with bundle identifier for PushKit voip in environment development default 23:24:37.072192-0600 callservicesd Registering client process with bundle identifier for PushKit voip in environment development default 23:24:40.870830-0600 callservicesd Registering client process with bundle identifier for PushKit voip in environment development default 23:25:07.273340-0600 CallCentralAlgeria Apps receving VoIP pushes must post an incoming call via CallKit in the same run loop as pushRegistry:didReceiveIncomingPushWithPayload:forType:[withCompletionHandler:] without delay. default 23:25:07.459152-0600 CallCentralAlgeria *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Killing app because it never posted an incoming call to the system after receiving a PushKit VoIP push.' *** First throw call stack: (0x18fa8d2ec 0x18cf11a7c 0x18ed89ea0 0x21e7fa494 0x19790b584 0x197901728 0x21e7f96fc 0x1978f1aac 0x19790b584 0x197928574 0x197900d30 0x197900c6c 0x18f9e62b4 0x18f9e40b0 0x18fa08700 0x1dc549190 0x192626240 0x192624470 0x192a82a30 0x104bbb440 0x104bbb3b0 0x104bbb4ec 0x1b640bad8) default 23:25:07.703911-0600 callservicesd XPC PushKit connection invalidated from client default 23:25:07.704140-0600 callservicesd XPC PushKit connection invalidated from client default 23:25:07.704322-0600 callservicesd XPC PushKit connection invalidated from client default 23:25:07.744832-0600 ReportCrash ASI found [CoreFoundation] (sensitive) '*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Killing app because it never posted an incoming call to the system after receiving a PushKit VoIP push.' *** First throw call stack: (0x18fa8d2ec 0x18cf11a7c 0x18ed89ea0 0x21e7fa494 0x19790b584 0x197901728 0x21e7f96fc 0x1978f1aac 0x19790b584 0x197928574 0x197900d30 0x197900c6c 0x18f9e62b4 0x18f9e40b0 0x18fa08700 0x1dc549190 0x192626240 0x192624470 0x192a82a30 0x104bbb440 0x104bbb3b0 0x104bbb4ec 0x1b640bad8) ' default 23:27:25.921684-0600 callservicesd Registering client process with bundle identifier for PushKit voip in environment development default 23:27:30.029547-0600 callservicesd Registering client process with bundle identifier for PushKit voip in environment development default 23:27:40.996248-0600 callservicesd XPC PushKit connection invalidated from client default 23:27:40.996284-0600 callservicesd XPC PushKit connection invalidated from client default 23:27:40.996319-0600 callservicesd XPC PushKit connection invalidated from client is this enough or do you need anything specific, let me know if anything is needed. thanks for the effort.