Error: Requested entity was not found. at FirebaseMessagingError.FirebaseError [as constructor]

Question

when do firebase push notification

firebaseAdmin.messaging().sendMulticast(message)

I get and error

 // Error: Requested entity was not found. at FirebaseMessagingError.FirebaseError [as constructor]
 // code: "messaging/registration-token-not-registered", message: "Requested entity was not found."

Answer 1

Short answer try new client registration token, and get fresh registration token from your client

The provided registration token is no longer registered.

Docs source: https://firebase.google.com/docs/cloud-messaging/send-message#admin