SD-WAN Team announce 16.12.1D/19.2.097 software release for cEdge and vEdge/Controllers LIVE on CCO which includes Critical Fixes.
Release note URL:
https://www.cisco.com/c/en/us/td/docs/routers/sdwan/release/notes/xe-16-12/ios-xe-sd-wan-re-notes...
You may need a TAC case. But can check the possible reason by following below steps
Step 1 : Login to vManage
Step 2 : Go to https://vManage_IP/logsettings.html
Step 3 : Enable viptela.enable.query.builder.log
Step 4 : Recreate the issue
Step 5 : ...
ISR 4451 is supported for SD-WAN. See the hardware compatibility matrix here
https://www.cisco.com/c/en/us/solutions/enterprise-networks/sd-wan/compatibility-matrix.html
In Interface template of interface in VPN 0, change VPN for static NAT route to Service VPN. That will give youip nat inside source static 172.16.1.20 45.67.12.3 vrf 10 egress-interface GigabitEthernet0/0/0
Then in Service VPN template, configure I...
The compatible Controller version to 17.2.1r is 20.1.1 downloadable from
https://software.cisco.com/download/home/286320995/type/286321394/release/20.1.1.1