Item location ZIP codes play a critical role in search visibility and sales conversion. They’re used in location filters to help buyers understand where inventory is located. ZIP codes also provide more accurate estimated delivery dates (EDD) and are used in best match ranking. If your listings are missing item location ZIP codes, you will be notified in the Active Listings tab in Seller Hub to provide missing ZIP codes. If you mistakenly dismiss the notification three times, you can return to the ZIP code page by clicking on the item location ZIP code link in the left navigation on the Active listings page. If you have multiple warehouses and do not have a unified ZIP code, you should ignore the notification. ZIP code changes you make will show in your listings after they refresh every few hours.