SDS1500I HELP : Begin SVS HELP – SDS Vsam Services
SDS1501I HELP : SVSSTAT (display status and statistics)
SDS1502I HELP : SVSTEST (perform selftest)
SDS1509I HELP : End SVS HELP – SDS Vsam Services
These messages are issued in response to a HELP command. They describe the commands supported by SVS.