A task of the present disclosure is to provide a user with an article capable of achieving harmony with a space. A data processing system (1) according to the present disclosure includes an acquisition unit (102) and a production unit (103). The acquisition unit (102) acquires on-site investigation data related to the space. The production unit (103) changes, with respect to article data of the article to be placed in the space, at least one of a dimension, design, and a function on the basis of the on-site investigation data so as to achieve harmony with the space and produces article processing data for processing the article according to the article data after the change. The on-site investigation data includes space-related data related to the space. The production unit (103) produces the article processing data on the basis of the space-related data.