Hi Goro,it is possible, follow
https://community.fortinet.com/t5/FortiGate/Technical-Tip-Mitigate-SSL-VPN-port-migration-issue-with-two/ta-p/254314
to create a mapped IP, thus allowing access on the mapped or the
original IP - essentially duplicating...
same error message here, but different story ... in this case I was just
trying to create a VPN provisioning template. It was saved but was
apparently missing some information. So when I continued editing and
tried to save it said, "object already ex...