SD- WAN performance SLA for IPsec interface shows down

Dear People,

I am new in these scene:-)

I use FG60F with 6.2.4. I have configured SD-WAN with the following members:

WAN1

VPN over WAN1

WAN2

If I configure Performance SLA, the VPN-interface shows down.

There are a solution article:https://kb.fortinet.com/kb/documentLink.do?externalID=FD48676

My Problem depends in a part of them, because I could not get a ping reply throught the VPN-Connection

The ping reply over WAN2 Port comes without a problem

I have execute the solution article like this example from the article:

# config system virtual-wan-link (virtual-wan-link) # config members (members)edit ?                                                                                                                                     <----- Use question mark to get the interface ID. seq-num                                                                                                                                              <----- Sequence number(1-255). 1  port1 2  HO_port1_2 3  HO_port2_3 4  port2

(members) # edit 2 (2)set source 172.31.192.57 (2)next (members)edit 3 (3)set source 172.31.192.57 (3)end (virtual-wan-link)end

I set the source IP to VPN--HV the same like WAN1 Port

But I do not get any replys over VPN Port.

2.851477 VPN--HV out 172.16.15.20 -> 10.10.1.1: icmp: echo request

2.880142 wan2 in 10.10.1.1 -> 10.11.15.2: icmp: echo reply

3.371446 wan2 out 10.11.15.2 -> 10.10.1.1: icmp: echo request

3.371491 VPN--HV out 172.16.15.20 -> 10.10.1.1: icmp: echo request

3.400144 wan2 in 10.10.1.1 -> 10.11.15.2: icmp: echo reply

There are other configurations I done:

Have somebody an Idea?