VxLANoverIPsec: entry not found in datasource

Hello! https://kb.fortinet.com/kb/viewContent.do?externalId=FD40170&sliceId=1 - followed the instructions, but something went wrong. config system switch-interface     edit "soft_switch"         set member "vlan123" "VxLan-IPsec" entry not found in datasource

Of course, I created the corresponding interface and it exists. If you enter port2 instead of vlan_123, the result is the same. Please help me figure out what's the matter.