This reports the internal request or policy identifier this security association was negotiated against, linking the SA back to the specific IPsec policy or traffic selector that triggered it. On a firewall with multiple VPN policies to the same or different peers, this lets an admin determine which configured policy produced a given active SA when several SAs exist for overlapping traffic. A ReqID of 5 might tie this SA to the fifth configured VPN policy in the firewall's rule base.