Special Handling When an Exchange Attendee Deletes or Declines an Exchange Meeting
The results of deleting or declining a Microsoft Exchange meeting depend on whether or not the attendee has SSSE synchronization enabled:
If the attendee has synchronization enabled, then declining or deleting a Microsoft Exchange meeting causes SSSE to remove that attendee from the Siebel calendar item.
If the attendee does not have synchronization enabled, then declining or deleting an Exchange meeting does not cause any change in the Siebel calendar item’s list of attendees, regardless of whether the change in Microsoft Exchange is made in the attendee’s folder or in the Organizer’s folder.