Google's Confirmation Process for Publishing an API with GCP's OAuth Sensitive Scope in GPTs

I am developing an app using GCP’s OAuth sensitive scope in GPTs and am in the process of getting confirmation from Google to publish the API, but I am not sure what this message says.
Confirmation Status
Pending Developer Actions
Complete all of the following actions. Please update your email thread with Google’s Trust & Safety team each time you complete one action; the Trust and Safety team will continue verification after all actions are complete. Details
Response Required.
Please comply with the requirement for proof of domain ownership
Ensure that the application domain has completed the Search Console validation process