The Push Notification System handle for the registration is invalid - FCMV1

Question

Hello,

I am trying to get Push Notification on Android going in my MAUI app.

I am using Azure Notification hub for my hub and have the FCMV1 configured. I am using the NotificationHubClient.CreateOrUpdateInstallationAsync to get the device registerd.

I have an api to look for the device registered and it seem like its working. Device is registered.

However the actual push notification is not received. From the apps perspective the OnMessageReceived is not getting fired. public override void OnMessageReceived(RemoteMessage p0)

When I tested sending a Push from the Azure Portal Test Send section I am getting the error. The Push Notification System handle for the registration is invalid. I have not clue as to what is wrong here. Any help in this regard will be helpful. I am sure I am making a mistake while registering.