If the requesting user specifies either the FROM or TO option on the RESTORE command or either the START or END option on the XRESTORE command, CA VM:Backup calls the user exit with the start and end dates that the user entered. If the user does not specify one of those options, CA VM:Backup uses the default start or end date. The LISTPD configuration record defines the default start date; the default end date is the current date.
If the user is authorized to restore data backed up during the time period selected, the user exit should return these dates. If the user is not authorized for the dates selected, VMBEXIT3 must alter the start and/or end date and return the modified dates. Make sure the dates specified in VMBEXIT3 include the last full backup or CA VM:Backup will not restore data from that backup.
If the dates returned by VMBEXIT3 are valid, the restore request continues. If the dates are not valid, this indicates a coding error in the user exit. CA VM:Backup issues a message explaining that the dates returned to CA VM:Backup are invalid and ends the restore request.
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