Generate Product FCM Key
To generate ProjectIdGCM and ServerAPIKeyGCM Keys, follow these steps:
1. Go to the URL https://console.firebase.google.com.
2. Click Create New Project.
3. Enter Project Name and accept terms and conditions.
4. Click Project Overview > Project settings.
5. Project ID will be ProjectIDFCM.
6. Select Cloud Messaging tab and enter the following details:
Legacy server key - ServerAPIKeyFCM
Sender ID key - SenderIDFCM
7. For ApplicationIDFCM, go to Settings and click Add Firebase to your Android app.
8. Add package details and click Register App.
9. Navigate to General Settings page.
Note: App ID will be the application ID.