Panorama SD-WAN Devices Import CSV brings error "Unspecified error during import"

[paSAXA]

Hy,

I try to import SD-WAN Devices by CSV to Panorama (11.0.3) SD-WAN Plugin (3.1.0)

this brings the error message "Unspecified error during import"

csv:

device-serial,type,site,zone-internet,zone-to-hub,zone-to-branch,zone-internal,router-id,as-number,loopback-address,prefix-redistribute,vr-name,vif-link-tag,remove-private-as,copy-tos-header
MOB1-FW1/012345678910,branch,MOB1-FW1,,,,,172.21.31.5,65504,172.21.31.5,10.1.1.0/24 & 10.1.101.0/24 & 10.5.1.0/21,vr_default,,,

Thanks

BR