Abstract: A system and method are provided for checking product availability for a listing on a network-based auction service using a separate auction application where an available quantity is determined from information received from a business information management system and the available quantity is displayed to the a user (i.e., seller) in the auction application. The seller may then select a quantity from the available quantity for the listing. In this manner, the available quantity may be used when a listing is generated. When a listing is published or communicated to the network-based auction service, the selected quantity of the product in the listing may be compared (verified) against the then available quantity of the product and the seller may be notified or the publication may be prevented if the selected quantity for the listing is not available.