How Merchant Center actually works
Merchant Center is the bridge between your store's catalogue and Google's shopping surfaces. You send it a product feed, it validates that data against Google's requirements, and approved products become eligible to appear in Shopping ads, free listings, and Performance Max. Linked to a Google Ads account, it is where the products those campaigns advertise actually come from. It is not an advertising tool in itself; it is the data layer that decides which products can be advertised at all, and how well they are represented when they are.
In Shopping, the feed is the targeting
Shopping and Performance Max do not use keywords. Google decides which searches your products match by reading the product data, so your titles, descriptions, attributes, and categories are effectively the targeting. A vague title like Blue Shirt will match poorly and rarely; a precise one like Mens Slim Fit Oxford Shirt Navy Cotton matches far more relevant queries and converts better. This is why iClick treats feed optimisation in Merchant Center as the single highest-leverage lever on Shopping performance, ahead of bids and budgets.
Account health and disapprovals
Merchant Center enforces strict data and policy rules, and it will disapprove products or, in serious cases, suspend the whole account. Common triggers are mismatches between the feed price and the landing page price, missing required attributes, unavailable products still shown as in stock, and policy issues around content or claims. A disapproved product cannot show, so silent disapprovals are lost revenue hiding in plain sight. Monitoring account and product status is not housekeeping; it is protecting the inventory your campaigns are allowed to sell.
The blockers that quietly kill Shopping
The most damaging Merchant Center problems are the invisible ones. Price and availability mismatches between the feed and the site cause disapprovals that shrink eligible inventory. Poor product identifiers weaken how Google understands and matches items. Stale feeds show products that are out of stock or wrongly priced. iClick audits feed freshness, identifier coverage, and disapproval reports as a routine, because in Shopping the difference between a healthy and a neglected Merchant Center is the difference between products that can sell and products that cannot appear.
