A non-transitory storage medium storing a program that causes a computer to execute a process, the process includes detecting connection relationship between a server and a communication device that belong to a system to generate physical connection information indicating the connection relationship; referring to design information related to connection of the server and the communication device to compare the physical connection information and the design information to determine presence or absence of an error in the connection relationship; determining whether a predetermined setting corresponding to the design information is applicable to a port of the communication device corresponding to the connection relationship determined as erroneous; applying the predetermined setting to the port of the communication device to which the predetermined setting has been determined as applicable; and changing the design information related to the communication device to which the predetermined setting has been applied, based on the physical connection information.