https://www.googleapis.com/auth/content) in its projects will need to undergo a Google OAuth verification to avoid an unverified app screen for its users. Users of unverified apps that access the Content API will see warnings and the apps will have limited functionality.There is no cost for app verification and the process typically takes 3 to 5 business days. For more information about how app verification fits into the broader process of authorizing requests, see our Using OAuth guide.
Apps already using the Content API scope prior to October 1, 2020 are not currently affected by this policy. However, this policy will be applied to all apps at a later date in 2021, and we recommend that all apps undergo the Google OAuth verification process at their earliest convenience to avoid any business interruptions.
For more information about app verification, see OAuth API verification FAQs. If you have any questions or need additional help, please reach out to us on the forum.
Benji Rothman, Content API for Shopping Team