To establish the connection between the FM Portal and the Exchange Server, you must enable the ACTIVATEEXCHANGEBOOKING configuration parameter.
Prerequisite
eTASK.IdentityChecker has completed successfully
Procedure in the FM Portal
Path to the starting point: Control Panel - Portal Options - Portal Administration - System Configuration
Open the configuration parameter ACTIVATEEXCHANGEBOOKING.
Change the configuration value to 1.
Click Save in the toolbar.