Troubleshooting Tip: FortiAP 431G does not allow DFS channels.

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Description	This article describes why FortiAP 431G does not allow DFS channels.
Scope	FortiAP 431G controlled by FortiGate running 7.2.X and earlier. Brazil country code.
Solution	FortiOS 7.2.X and earlier does not allow FortiAP 431G to use DFS channels with the Brazil country code. To use that channels, FortiGate must be running 7.4.2 or higher. This only applies with the Brazil country code.