To notify ordering, order confirmation and order processing completion using instructions in different formats.

When an order is received, a management part 2 prepares an internal instruction in which information items of a database and data values are correlated with each other, and determines an ordering destination. An organization part 12, for example, which is correlated with a determined supply management device prepares an external instruction with reference to a predetermined table and performs routing to a determined print base server. When the external instruction is sent back from the print base server and order confirmation or supply completion is notified, the organization part 12, for example, extracts, from the sent-back external instruction, information items of which data values have been updated and the data values, picks up the information items of the internal instruction corresponding to the updated information items with reference to the table, and copies the extracted data values to the information items. The management part 11 updates the database based on the internal instruction obtained.