We need to synchronize our account details to Google Home Account.
I can able to link the account details FROM Google Home App TO my iOS application. Also, I need to link the account details FROM my iOS application TO Google Home App.
We have referred the below document: https://developers.google.com/assistant/smarthome/develop/implement-app-flip?OS=iOS#setup
In the above document, they have mentioned the App Flip option to link the account details from the Google Home app to my iOS app.