New FireBase HomePage FCM MismatchSenderId Err

Question

I have one project in FireBase and two android apps in the project.

The app sends and receives messages through FCM, but I learned that the FireBase homepage was renewed a while ago.

There, a new project was registered and two Android apps were also registered.

Create a new server key for FCM on the renewed FireBase homepage, and use the new server key in both apps.

I tested the FCM using, but one app works fine, but the second app gives a MismatchSenderID error.

New server key If you use the old server key, it works, and if you use the new server key, an error occurs.

I don't know what the problem is

It doesn't seem like you have to register only one app in one project.

Anyone who has experienced the same type of error as me?

{"multicast_id":8246962902604143917,"success":0,"failure":1,"canonical_ids":0,"results":[{"error":"MismatchSenderId"}]}

question from:https://stackoverflow.com/questions/65878531/new-firebase-homepage-fcm-mismatchsenderid-err

Answer 1

Waitting for answers