This article addresses the issue where FortiCloud displays N/A in place of the correct Application Name.
Solution
This issue is seen because the FortiGate Application Sensor is not able to log the signatures properly. To resolve this issue use the extended database for IPS and enable more logging features for Application sensor:
config ips global set database extended end config application list edit <application control profile> set other-application-log enable set unknown-application-log enable end