Hello,thank you for your suggestion.
Yes, same version, same model, same FortiGate box
backup config file from the same Firewall and then restore into same firewall , the alert still appear .
Also upgraded the firmware and test again on the same box , backup config from this firewall and then tried to restored to this firewall again. Testing on the same model, same version but the alert still appear when tried to restore.
Other than showing the alerts , there is no issue. The restoration also success , production also no impact. It's was like showing the false alert.
Any diagnose command to check why it's triggering the alerts?