Abstract: A shelf storage system having an interim storage shelf which is disposed in a group of primary storage shelves for preliminarily receiving products and a shelf control appliance for receiving products from the interim storage shelf. Products are always stored via the interim storage shelf, with the aid of a transport device. Because of the use of the interim storage shelf, the product can be parked until the shelf control appliance has handled output processing or retrieval of products. Moreover, a second shelf control unit is not required in order to distribute the products in this shelf for the purpose of storage.