With Google Ads Shopping campaigns, you can use custom labels when you want to subdivide the products in your campaign using values of your choosing. For example, you can use custom labels to indicate that products are seasonal, on clearance, best sellers, etc. These values can then be selected to use for monitoring, reporting, and bidding in your Shopping campaign.
Learn more about using custom labels in a Google Ads Shopping campaign in the Google Ads Help Center.
Before you use custom labels in your Shopping campaigns, you must upload an updated product feed to your Merchant Center account using custom label requirements. You can then use the labels to subdivide your product groups in your Shopping campaigns.