android - How To Create Topic in FCM Notifications

Question

I'm trying Firebase-Notification API the service is worked perfect when i send downstream message from console to app, but how to send message to topic registered users ?

i did in android side

FirebaseMessaging.getInstance().subscribeToTopic("TopicName");

but when i try send downstream message from console to topic it's says

This project does not have any topics

EDIT : i figured out that after mapping the topic it's take up to 1 day to show up in Firebase Console

Answer 1

Waitting for answers