If you have product data sync enabled, Zentail will send product data  feeds to Amazon every 15 minutes on the hour (i.e. :00, :15, :30, :45). The change should be reflected in your Seller Center dashboard and live on the Amazon ASIN within 1 hour.

Larger catalogs of greater than 1,000 SKUs can take more time for feeds to be built so additional delays of 15 to 30 minutes can be experienced.

Related reading: How long does it take for errors to disappear once action is taken in Zentail?