[SOGo] error message

[tomaskovic]

Hello.
I found a error message in my /var/log/sogo.log

Jan 23 18:15:11 sogod [1565]: [ERROR]
<0x09C029AC[SOGoAppointmentFolder]:personal> DAV property
'{urn:ietf:params:xml:ns:caldav}schedule-tag' has no matching SQL field,
response could be incomplete

What does it mean?
Thanks.

Best regards
Tomaskovic Marcel
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