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Support Article

Unable to send Push Notification on custom Android application

SA-93502

Summary

Unable to trigger Push Notification (PN) on a custom Android application. The Status displays as Not Registered in the Push console.


Error Messages


Can't send push notification to GCM server. The reason is: 'Could not post JSON requests to GCM after 4 attempts' 
com.pega.pegarules.priv.mobile.pushnotification.PushNotificationException: Can't send push notification to GCM server. The reason is: 'Could not post JSON requests to GCM after 4 attempts'
at com.pega.pegarules.integration.mobile.internal.pushnotifications.sender.GcmSender.send(GcmSender.java:64) 
at com.pega.pegarules.integration.mobile.internal.pushnotifications.AndroidPushNotifier.sendToDevice(AndroidPushNotifier.java:69) 
at com.pega.pegarules.integration.mobile.internal.pushnotifications.BasePushNotifier.sendToDevice(BasePushNotifier.java:281) 
at com.pega.pegarules.integration.mobile.internal.pushnotifications.BasePushNotifier.sendToDeviceGroupped(BasePushNotifier.java:275) 
at com.pega.pegarules.integration.mobile.internal.pushnotifications.BasePushNotifier.sendToApplication(BasePushNotifier.java:257) 
at com.pega.pegarules.integration.mobile.internal.pushnotifications.AggregatingPushNotifier$3.visit(AggregatingPushNotifier.java:107) 
at com.pega.pegarules.integration.mobile.internal.pushnotifications.AggregatingPushNotifier.sendMessage(AggregatingPushNotifier.java:127) 
at com.pega.pegarules.integration.mobile.internal.pushnotifications.AggregatingPushNotifier.sendToApplication(AggregatingPushNotifier.java:103)


Steps to Reproduce

  1. Set up a Pega 7.2.2 instance
  2. Build HC7 for Android with the Push Notification support
  3. Run the application
  4. Log in to Designer Studio
  5. Send Push Notification


Root Cause



Google Cloud Messaging (GCM) service is deprecated and removed from use on 11th April, 2019. Migration from GCM to Firebase Cloud Messaging (FCM) is performed before 11th April, 2019.

Resolution



Apply HFix-57816.

 

Suggest Edit

Published January 3, 2020 - Updated October 8, 2020

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