Hello, This error means you’re trying to update an event with an older version than the one already in the database.
By older, I mean than the sequence value of your event is less than the sequence value in the database. Regards, -- Quentin Hivert || Alinto || R&D Lead Developer 19 Quai Perrache 69002 Lyon <http://www.alinto.com> www.alinto.com From: [email protected] <[email protected]> On Behalf Of "Joachim Lindenberg" Sent: mardi 7 octobre 2025 11:15 To: [email protected] Subject: [SOGo] CaldavSynchronizer to SOGo synchronization issue? I am using CaldavSynchronizer to synchronize (more specifc merge with specific rules) two calendars, one of the accessed via SOGo. CaldavSynchronizer shows the exception: CalDavSynchronizer.DataAccess.WebDavClientException: Response status code does not indicate success: '403' ('Forbidden'). Message: <?xml version="1.0" encoding="utf-8"?> <D:error xmlns:D="DAV:">sequences don't match</D:error> at CalDavSynchronizer.DataAccess.HttpClientBasedClient.WebDavClient.<EnsureSuccessStatusCode>d__10.MoveNext() and I can also see the calendar entry supposed to cause the issue. In SOGo log at the same time I see [169023]: [ERROR] <0x5de0d830c970[SOGoAppointmentFolder]:personal> DAV property '{DAV:}displayname' has no matching SQL field, response could be incomplete Is this a known issue of either CaldavSynchronizer or SOGo? Thanks, Joachim
