First some Background/Research...
User Defined Fields
In Help:
....."It is possible to define custom fields in Outlook. These fields can be linked to a table / view column.
The User Defined Field(s) must exist in the Outlook Folder before starting the mapping process. GeniusConnect will scan the first 50 Item’s in the folder to collect the user defined fields."
https://www.geniusconnec...p/UserDefinedFields.html however it also says in the second topic that....
"Assign fields
To link an Outlook field to a database field, click at the ‘DB Field’ column part of the Outlook field row to display a combo box with available columns. Select in the combo box the appropriate database field. Each database field can only be linked to one Outlook field.
Every Outlook Folder Type (Calendar, Contacts etc.) has a different set of available fields (depends also on Outlook Version). Please see Outlook documentation and Microsoft Support site for details about available Outlook Fields" ....