Abstract: A transaction device executes transaction processing relating to a medium, and includes: a medium retention section capable of retaining the medium; plural first storage boxes capable of storing the medium; a second storage box capable of storing the medium and that is detachable with respect to the transaction device; a conveyance section capable of conveying the medium on a conveyance path connecting between the first storage boxes, the second storage box, and the medium retention section; and a classification section provided on the conveyance path and capable of classifying the medium as the medium passes through, wherein the conveyance section being configured to convey the medium from the first storage boxes to the second storage box or from the second storage box to the first storage boxes via the medium retention section and the classification section when performing retrieval, auditing, or replenishment.

Abstract: There is provided an information processing device disposed between a cash processing terminal group in a local network and an outside network existing outside the local network, the information processing device including: an information acquisition unit that acquires, in the local network, a serial number obtained as a result of a currency bill being read by a cash processing terminal configuring the cash processing terminal group; a storage control unit that stores the serial number in a storage unit; and a determination unit which, in a case in which a serial number obtained as a result of a currency bill being read by any cash processing terminal configuring the cash processing terminal group has been acquired, determines whether or not that serial number matches the serial number stored in the storage unit.