X_OUTBOUND_UNREACHABLE
Means
an outbound HTTP call got no response
Typical cause
outbound() could not resolve the host, connect, finish TLS, or the connection was reset before a response arrived. The vendor is down, or an egress rule drops the traffic. Retryable
Fix
curl -sS -m 5 -o /dev/null <meta.origin> — reachable from here? Else check the egress rule and the vendor's status, then re-run the call