The present invention permits a data related to a destination used in an order reception operation of a goods delivery service to be acquired from an address information stored in an address information file retained in a portable electronic terminal, thus leading to utilization of the address information stored in the address information file as the data related to the destination used in the order reception operation of the goods delivery service. Thereby, a manual input of addresses, etc., in a product sales data processing system can be saved. Accordingly, a store with installation of the sales data processing system will achieve shortening of operation time, improvement of work efficiency, and reduction of mistakes, and a customer who owns the portable electronic terminal will be able to enjoy enhancement of the convenience and serviceability.