Error SQL - problem to save a new meeting

Hi, when creating a new meeting, I'm not able to save it as I get an error "Execute SQL error, method PRIMARY MeetingOccuranceInfoMapper.getItems, rawSQL: SELECT meeting_number, occurance, account_id, meeting_id, create_time, modify_time FROM ZMWEB_MEETING_OCCURANCE_INFO WHERE meeting_number = # {meetingNumber}" 

I'm filling all fields as usually, in the web browser. Can anyone help or advise? It's quite urgent.