A product set is a group of items taken from a Meta catalogue using filters, such as all women’s footwear, everything under £50, or products tagged as best sellers. Catalogue ads and collection ads draw from a product set rather than from the whole catalogue, so the set decides which products can ever appear in those ads.
How product sets work
A catalogue holds every product you upload, usually through a product feed or a platform integration such as Shopify. In Commerce Manager you create product sets by setting rules on the feed’s fields: brand, product type, price, sale price, availability, condition, or custom label fields you add yourself. The set updates automatically as the feed changes, so a new product that matches the rules joins the set without any manual work.
When you build an Advantage+ catalogue ad, you pick the product set it should use. Meta then chooses which items from that set to show each person, using browsing signals from the pixel and Conversions API for retargeting, or broader predictions for prospecting. Every catalogue has an “all products” set by default; any further sets are yours to define.
Why it matters
Left to the whole catalogue, Meta will promote whatever it predicts gets the cheapest results, which is often low-priced, low-margin items. Product sets are how a UK retailer puts commercial judgement back into an automated format. You can give high-margin lines their own campaign and budget, keep clearance stock out of prospecting, or run a seasonal set for Christmas gifting without rebuilding the catalogue.
They also protect the customer experience. A set that excludes out-of-stock items, or items with poor images, prevents ads that lead to a dead end. And splitting sets lets you report results by range, which a single catalogue-wide campaign cannot show clearly.
A practical example: a UK homeware shop might keep one set of its fifty best-selling items for prospecting ads to new audiences, a full-range set for retargeting people who viewed specific products, and a gifting set that only switches on from November. Each set has a clear job, and none of them needs more than a few minutes to maintain once the feed is tidy.
Common mistakes
- Running everything from “all products” and then wondering why the ads keep showing the cheapest accessories.
- Filtering on fields the feed fills inconsistently Such as a product type that some items lack, so products silently drop out.
- Not excluding out-of-stock items when the feed’s availability field is reliable enough to use.
- Too many tiny sets Each with too little budget or traffic to learn.
- Never checking the set’s item count after a feed change or a new filter.
How to act on it
Start by making the feed reliable: consistent product types, accurate availability and prices in pounds that match the site. Add custom labels for things the feed does not hold, such as margin band, best seller or seasonal range. Then build a small number of sets with a clear purpose, for example best sellers for prospecting, full range for retargeting, and a high-margin set with its own budget.
After creating each set, check how many items it holds and preview a few ads. Keep an eye on the catalogue match rate, because retargeting from a set only works when site events match catalogue IDs. Catalogue structure and product set strategy are part of my catalogue and dynamic product ads service.