Package name of google-services.json

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#1

In the process of making a google-services.json, I discovered I have to give the package name of the app. How do i find the package name of the app?

#2

Project overview - project setting

#3

Package name you have to make go in screen 1 in that go to advance setting you have to write it
Like this
Com.YourCompanyname.appname

#4