FortiManager Firmware : Special notices : FortiManager VM license check
 
FortiManager VM license check
As a part of the license validation process FortiManager compares its IP addresses with the IP information in the license file. If the IP addresses do not match, FortiManager returns the error IP does not match within CLI command get system status output. If a new license has been imported or the FortiManager’s IP address has been changed, the FortiManager must be manually rebooted in order for the system to validate the change and operate with a valid license.