I have more than 300+ clients in my application and I’m using Firebase Cloud Messaging API to send push notifications. Recently I have migrated to FCM V1 and used Firebase Admin SDK. We are using a single service for sending push notifications.Since we cannot initialize Firebase apps for each client when starting the service, I have initialized firebase app when sending the push notification. To avoid duplications of firebase app initialization I have used below code snippet. But still I’m getting “FirebaseApp name [project-id] already exists!” error.