Client explicitly never does the Audio activate session: Looks OS on behalf of the client and expects the deactivation as well and also unable to find the root cause of the audio session activation. Please find the detailed use case for the time the issue occurred: Application is in suspended and received PTT push notification: 2024-09-03 16:18:43.258467 +0530 default AT&T EPTT <ALA_SIGNAL>: [OS-CCF] -[PushToTalkInterface incomingPushResultForChannelManager:channelUUID:pushPayload:] Part of PTT call - didActivateAudioSession activated 2024-09-03 16:18:43.570734 +0530 default AT&T EPTT <ALA_SIGNAL>: Enter -[PushNotificationManager didActivateAudioSession:] Due to internal settings/constraint, client ended the call by setting setActiveRemoteParticipant to null 2024-09-03 16:18:43.601432 +0530 default AT&T EPTT <ALA_SIGNAL>: Enter -[PushNotificationManager setActiveRemoteParticipant:useCallerThread:image:] [talkerName = (null)] 2024-09-03 16:18:43.603754 +0530 default AT&T EPTT Enter -[KN_CallStateMachine cleanUp] [current state = STATE_CALL_DISCONNECTED] 2024-09-03 16:18:43.606457 +0530 default AT&T EPTT Provider <CXXPCChannelProvider: 0x301ed4180> reports channel with UUID 46FA76CB-A956-4FDF-9DC1-A435C8576D4E ended an incoming transmission with reason 0 Part of PTT call end - didDeactivateAudioSession deactivated 2024-09-03 16:18:43.948898 +0530 default AT&T EPTT <ALA_SIGNAL>: Enter -[PushNotificationManager didDeactivateAudioSession:] 2024-09-03 16:18:43.410607 +0530 default callservicesd AVAudioSession_iOS.mm:2774 Deactivated session 0x6800c 2024-09-03 16:18:43.948975 +0530 error runningboardd [app<com.msikodiak.eptt(35408D99-1B85-4B85-A639-D03A7D98DE18)>:282] client not entitled to get limitationsForInstance: <Error Domain=RBSServiceErrorDomain Code=1 "Client not entitled" UserInfo={RBSEntitlement=com.apple.runningboard.process-state, NSLocalizedFailureReason=Client not entitled, RBSPermanent=false}> And later in BG , received the Audio route change and seen audio activate session for the client, please let us what is causing the activate session also suppose to be deactivated by OS since it is activate behalf of client: 2024-09-03 16:18:47.351851 +0530 default AT&T EPTT [IOS] audioRouteChangeEventNotification Exit 2024-09-03 16:18:47.352385 +0530 default AT&T EPTT AVAudioSession_iOS.mm:2654 Activated session 0x6800c

Hello Tried sample application just to setupChannelManager and joinTheChannel, but for some reason PTChannelManager initialised successfully but with NO channelUUID Xcode Configuration wise, we have done the following things, New PushToTalk Capability added for our application-identifier [ Apple Dev account] New PushToTalk BackgroundMode is enabled APNS capability added Microphone Permission entry added in pList We have the below required entitlements     a> com.apple.developer.push-to-talk     b> aps-environmentdevelopment Could you please help here and see whether anything we are missing which is resulting in NULL channelUUID within didFinishLaunchingWithOptions method [PTChannelManager channelManagerWithDelegate:self restorationDelegate:self completionHandler:^(PTChannelManager * _Nullable manager, NSError * _Nullable error) {      NSLog(@"Active Channel ID = %@", [[manager activeChannelUUID] description]);     }   }];

Hello Thanks the above review agreement was the reason for app identifier register problem, Its resolved. Tried sample application just to setupChannelManager and joinTheChannel, but for some reason PTChannelManager initialised successfully but with NO channelUUID and Error param also nil Xcode Configuration wise, we have done the following things, New PushToTalk Capability added for our application-identifier [ Apple Dev account] New PushToTalk BackgroundMode is enabled APNS capability added Microphone Permission entry added in pList We have the below required entitlements     a> com.apple.developer.push-to-talk     b> aps-environmentdevelopment Could you please help here and see whether anything we are missing which is resulting in NULL channelUUID within didFinishLaunchingWithOptions delegate method [PTChannelManager channelManagerWithDelegate:self restorationDelegate:self completionHandler:^(PTChannelManager * _Nullable manager, NSError * _Nullable error) {     NSLog(@"Active Channel ID = %@", [[manager activeChannelUUID] description]); }];

Hello Thank you, i will refer the given links