Fortigate HA active - active mode with SDWAN configuration

High Availability is a FortiGate-specific solution for providing redundancy. HA uses FGCP. Essentially, HA functions similar to VRRP, but one of the main differences is that you absolutely must have two same FortiGate models to achieve HA.
HA configuration Road map -
• config system ha
• set group-id 10
• set group-name HA_cluster
• set mode a-a
• set password admin@54321
• set priority 200
• set hbdev port3 0 port4 1
• set session-pickup enable
• set override enable
• set override-wait-time 5
• set monitor port1 port2 port3 port4
• end
To view, the status in CLI  # get system ha status, get system ha
In a secondary firewall, you have to configure only ha & hostname and make sure priority should be less than the primary firewall.