The Synchronization Interval determines how often the firewall should check for changes and make any necessary updates to the relevant address objects and address groups.
Synchronization is needed because the address object mappings and the AWS regions being monitored can be changed or reconfigured at any time, while the IP addresses and running state of the EC2 instances may be changed on AWS.
To configure the Synchronization Interval
To force synchronization
Click either Force Synchronization or Delete AWS Address Objects.
This is useful if you are aware of changes and in a hurry to see the address objects updated accordingly.