It is recommended that you maintain a list of available versions via the MV request type. Within the MV return is a space-delimited list of available versions. For example:  200  21T  21W  22T  23T  24T  25T  26T  27T  28T  29T  30T 31T 32T

NOTE: The PC*MILER-AS/400 Multi-Version Switch PC mileage server is designed such that if the mileage server (as400.exe) loses connection to a particular version of PC*MILER, the affected version will be removed from the list.