Q:

Change Firebase Cloud Message account

I have my android app running firebase cloud message using uat@gmail.com.  and now, i need to change the administration to production account bbb@mycompany.com 
what i have done, using bbb@mycompany.com to create new project and generate a new google-services.json and replace existing google-services.json i created with aaa@gmail.com 
using android studio connect to firebase and show 
Firebase: A config file "D:\xxx\xxx\google-services.json" was found, but it indicates a project ID "xxx-1vv" that you dont appear to have access to.  Request access or delete the file in order to proceed with the connection process. 
anyone could help?? 

A:

You can transfer ownership of a Cloud (Firebase) product without having to change the way your users user the project.   Please read this for details.   Note that all Firebase projects are also Cloud projects, so anything you do in the Cloud console applies to Firebase.