a processing apparatus includes a memory , and a processor coupled to the memory and configured to acquire first data that indicates correspondence relationship between a first address given to a first adapter of a first device and a first bus number given to a first bus coupled to the first adapter , acquire second data that indicates correspondence relationship between a second address given to a second adapter of a first device and a second bus number given to a second bus coupled to the second adapter , acquire third data that indicates correspondence relationship between the first address and a port number given to a port of a second device , the port being coupled to the first adapter with the first bus , and when the second bus number is identical to the first bus number , generate fourth data that indicates that the second adapter is coupled to the port .