for enhanced-listings, specifically, google tends to look for factors such as:- linking to a google-approved third-party payment-gateway;- customer-reviews via google-customer-reviews or approved third-parties;- related, having a clear track-record of order-fulfillment;- submitting high-quality data and all relevant optional attributes;- submitting high-quality product images that conform to all policies;- submitting variant products with size, color, gender, item_group_id, etc;- submitting apparel products with size, color, gender, item_group_id, etc;- submitting products with a valid gs1 bar-code stamped on the product;- submitting inventory via a products-feed — not via automated structured-data;- accurate physical inventory, stock, details, submitted and on the website;- accurate structured-data on all link-landing-pages, especially for variants;- accurate policy pages that contain specific, focused, policy details;- accurate business-address and customer-service-address on the contact-us page;- linking the website contact-us, web-page url to the merchant-center-account;- most especially, accurate return-and-refund details, that conform togoogle’s policies, on a separate return-and-refund policy page, that isalso linked on the website/footer and to the merchant-center-account.
there are many many other quality and trustrelated signals that google does not divulge.
google may randomly inspect a business, merchant, account, submitted-data,website, products, supply-chains, etc., for potential eligibility and issues –the process is ongoing and eligibility may be added, or removed, at any time. importantly perhaps, some types of physical items are not seen as a good-fitfor enhanced-listings, regardless of any high-quality data or very high trust –for example, most bespoke, made-to-order item-offers, or any inventory that
cannot be accurately or directly, verified or controlled, by the merchant, etc.,are not eligible to show in those specific listings.