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Hi, Problem: Even after successful schedule creation I am not getting call backs(intervalDidStart, intervalDidEnd) to my extension I have created DeviceActivityMonitor extension by creating call Directory Extension and updated info plist with the value (com.apple.deviceactivity.monitor-extension) and updated principal class value too. I try running the extension on my demo app which has the below code,         let schedule = DeviceActivitySchedule(             intervalStart: DateComponents(hour: 10, minute: 30),             intervalEnd: DateComponents(hour: 12, minute: 15),             repeats: true,             warningTime: nil)         do {             let center = DeviceActivityCenter()             center.stopMonitoring([.daily])             try center.startMonitoring(.daily, during: schedule)             print("Schedule created")             print(center.activities)         } catch {             print(error)         }     } My extension has the below code, override func intervalDidStart(for activity: DeviceActivityName) {         super.intervalDidStart(for: activity)         print("Entered Did Start")     }     override func intervalDidEnd(for activity: DeviceActivityName) {         super.intervalDidEnd(for: activity)         print("Entered Did End")     } Please guide me to find out the issue. Thanks in advance.