Cash balance check system, method carried out by cash balance check system, and non-transitory computer readable medium

A method carried out by a cash balance check system including a plurality of settlement devices and a plurality of change machines corresponding to the respective settlement devices, the method comprising:

• performing settlement processing for commodities to be purchased by a customer;
• performing cash deposit and dispense processing during the settlement processing;
• generating cash balance information indicating a remaining amount of cash in each of the change machines, and outputting the cash balance information from the change machines in association with identification information for the respective change machine generating the cash balance information, and
• acquiring the cash balance and identification information output from each of the change machines by using at least one of the settlement devices, and outputting the acquired cash balance and identification information for each of the change machines from the at least one of the settlement devices.