Thanks dkarp for your guide !
I realized follow sync.txt and response I received is good.
But there's a unusual with this Synch
This's Calendar and I have 2 folders pregnant will Appointments. When I check 1 or 2 folders to switch and to preview the calendars in these folders. After that I rerun SOAP SyncRequest, I saw token has changed, and Zimbra notice change, although infact there's no change, nothing be changed, only view.
Is there anybody meet this case ?
Is this a bug with Zimbra ?