https://fortinetcloudcse.github.io/fortinet-ui-terraform/3_example_templates/3_3_ha_pair/3_4_troubleshooting.htmlTroubleshooting HA Pair Not Forming Symptoms: FortiGates don’t see each other in HA status Checks: # Verify HA sync connectivity execute ping-options source <port3-ip> execute ping <peer-port3-ip> # Check HA configuration show system ha # Check security group rules # Ensure UDP 23/703 and all TCP allowed on HA sync subnet Resolution: Verify HA sync subnets were created Check security group allows all traffic between HA sync IPs Verify unicast heartbeat configuration matches AWS API Calls Failing Symptoms: Failover doesn’t update EIPs or routesHugoen-US