The management status of a firewall changes to Out of Syncstate when the firewall is locally modified. You need to synchronize firewall configuration with Firewall Management to set the device to In Sync state.
To synchronize a firewall configuration with Firewall Management
Review the configuration differences between Firewall Management configuration and the local firewall configuration.

Review the pending commits.

Click OK in the dialog.
Synchronization process runs.
The firewall is now managed by Firewall Management, thus the CONFIGURATION status changes to In Sync on the Manager View | Home > Firewalls > Inventory page.