System and non-transitory computer readable storage medium

A non-transitory computer readable storage medium having a program stored therein, the program causing a computer configured to control a system including a plurality of pieces of equipment to execute:

• causing the plurality of pieces of equipment included in the system to communicate with other equipment by using inter-equipment pairing information, the other equipment being included in the system, and the plurality of pieces of equipment and the other equipment mutually storing the inter-equipment pairing information that is information for mutual authentication performed between the plurality of pieces of equipment and the other equipment;
• causing a part included in the plurality of pieces of equipment to communicate with an other part by using inter-part pairing information, the part and the other part being included in the plurality of pieces of equipment that are identical, and mutually storing the inter-part pairing information that is information for mutual authentication performed between the part and the other part;
• causing a second equipment included in the plurality of pieces of equipment to transmit to a first equipment included in the plurality of pieces of equipment a pairing deletion instruction request that is information that instructs deletion of the inter-equipment pairing information, and
• when the system receives a deletion request that is information that requests deletion of the inter-equipment pairing information, the system unpairs between the plurality of pieces of equipment by deleting the inter-equipment pairing information stored in each of the plurality of pieces of equipment, and maintaining pairing between the plurality of pieces of the part by maintaining the inter-part pairing information stored in the part.