(Refer to the exhibit.

In the exhibit, the IPsec tunnel statistics event log entries include the field advpnsc.

Fortinet documents that advpnsc identifies whether the VPN event is based on an ADVPN shortcut:

advpnsc=1 → the tunnel is an ADVPN shortcut

advpnsc=0 → not an ADVPN shortcut (Fortinet Documentation Library)

In the shown logs, the tunnel vpntunnel="HUB1-VPN1_0" has advpnsc=1, which means HUB1-VPN1_0 is an ADVPN shortcut tunnel. (Fortinet Documentation Library)

The other tunnels shown (for example VPN4_0 and HUB2-VPN3) have advpnsc=0, which only indicates no shortcut is identified for those log entries—it does not prove they “cannot accept” shortcuts, only that the specific event is not a shortcut. (Fortinet Documentation Library)