To prevent the occurrence of any sales chance loss even when it is determined that delivery is absent on a reception request date on the basis of a predetermined delivery date and time.

When it is determined that the reserved acceptance of merchandise to be identified by input identification information on an input reception request date is possible (step S108: Y), a storage part is made to store the merchandise with the reception request date and time. When it is determined that the reserved acceptance of the merchandise to be identified by the input identification information on the input reception request date and time is not possible (step S108: N), the merchandise to be delivered on the reception request date and time is extracted from a delivery data file, and the input of the identification information of the extracted merchandise is permitted, and the storage part is made to store the merchandise to be identified by the input identification information with the input reception request date and time.

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