[SOGo] Sync outlook calendar to SOGO error

[Kenren Taisho]

Hello.
I am having issues migrating users to our SOGO server specifically because
of Outlook Calender issues. When using CaldavSyncronizer to sync the
Outlook Calendar entries to SOGO, we are experiencing the following error
from CaldavSyncronizer:

<ExceptionThatLeadToAbortion>CalDavSynchronizer.DataAccess.WebDavClientException:
> Response status code does not indicate success: '412' ('Precondition
> Failed'). Message:
> &lt;?xml version="1.0" encoding="utf-8"?&gt;


Does anyone know what is the meaning of this error and how to solve it?


Kind regards,