Refer to the exhibit. The VPN tunnel between the FlexVPN spoke and FlexVPN hub 192.168.0.12 is failing. What should be done to correct this issue?

The keyring address command identifies remote peers for authentication matching, but its absence would produce an authentication failure rather than the group authorization failure that prevents spoke policy assignment.

The 'match ikev2 any' command broadens IKEv2 proposal acceptance in the policy but does not resolve the missing AAA group authorization command needed for spoke configuration delivery.

The IKEv2 profile on a FlexVPN hub requires the 'aaa authorization group peer list' command to enable AAA-based group policy push, allowing the hub to deliver configuration parameters such as IP addresses and routes to registering spokes. Without this command, the hub cannot complete the group authorization phase of IKEv2 negotiation, causing the tunnel to fail to establish.

FlexVPN tunnels default to 'tunnel mode ipsec ipv4'; adding 'tunnel mode gre ip' would change the encapsulation type and is unrelated to the IKEv2 group authorization failure.