Google has introduced a new help page detailing the integration of Cloud Retail as a destination within the Google Merchant Center.
This feature is accessible through the “Manage Programs” section but is exclusively available to cloud customers and only within the standard Merchant Center interface, not in Next.
Users have also the option to manage the inclusion in Cloud Retail using two specific values, “cloud_retail” and “local_cloud_retail“, for both the “destination_included” and “destination_excluded” attributes.
Learn more about it here: Cloud Retail destination in Merchant Center.