Legacy Android notification services
Configure > MDM Configurations > Google > Legacy Notification Services
Legacy Android devices use Google's Firebase Cloud Messaging (FCM) (previously GCM), which requires you to have a Gmail account, project number, and server API key. If you already had GCM set up, you do not need to do anything to update to FCM.
To set up FCM for Android devices
1.In a web browser, navigate to https://console.firebase.google.com.
2.Click Add project.
3.Enter a name for the project.
4.(Optional) Set up Google Analytics for your project.
5.Click Create project.
6.Once the project is created, click Continue.
7.Navigate to Project Settings.
8.On the Cloud Messaging tab, locate the Server Key and Sender ID.
9.In the Endpoint Manager console, click Tools > Modern Device Management > MDM Configurations > Google > Legacy Notification Services.
10.In the Firebase Cloud Messagingsection, copy the Sender ID value into the Project Number text box.
11.Copy the Server Key into the Server API Key text box.
12.Click OK to save your configuration.
13.Click OK to restart the MDM service.
You can now enroll Android devices.