How to change obb name of my game

Hello i finished my game but when i try to lunch it at amazon store it say’s that my obb is in use and i need to change it .

So i can change de name of my obb on GDevelop ???

obb is an expansion package, yes? Is that what you meant?
I don’t understand the issue, here.

Likely means the application package name. For Android these must be unique, and not just for you, across all android games.

You can change your package name in the project properties within GDevelop. Same place you set the game name and stuff like your resolution/scaling mode/etc.