A system includes a processing apparatus and a management server. The processing apparatus includes a first transmission unit configured to transmit information about a state of a consumable item for consumption by the processing apparatus. The management server includes a first generation unit configured to generate a first screen for purchasing the consumable item based on the information transmitted from the processing apparatus about the state of the consumable item, a second transmission unit configured to transmit a request for purchasing the consumable item based on a user instruction designated on the first screen displayed on the processing apparatus, and a second generation unit configured to generate a second screen containing a payment code based on information about the payment code acquired based on the request for purchasing.