Google Shopping Products Without Unique Product Identifiers Will See Limited Reach In Free Listings As Opposed To Getting Disapproved

Previously, if a product listing was missing these required attributes like such as GTIN [gtin], MPN [mpn], and brand [brand], the product was immediately disapproved and no longer showed in free listings. With the introduction of limited performance enforcements(coming in Nov 2021), products that are missing such attributes will remain eligible to serve but their performance may be limited.