Most channels use the iCalendar format for exporting and importing calendar data. Once a VRBS ical export url has been added to a channel, a reservation created on VRBS will block the calendar on that channel, and a reservation created on that channel will block the dates on your main calendar (requires cutting and pasting the ical provided by the VRBS into the calendar).
Setting Up an iCal Sync
Let’s review the components of the iCalendar interface:
iCal Export URL – This URL would be entered into listing sites that accept iCal imports.
iCal Import URL – VRBS supports multiple iCal export URLs. Please contact support if you wish to use this feature.