A ticket records a known problem: title, area, hosts, subject, description, links to alert rules and anomalies, and a log of comments, edits, resolving and reopening. Opening, resolving (with the resolution as the note) and reopening go on the timeline; every step is audited, and the audit rows stay off the timeline. An alert or anomaly an open ticket covers (by link, by subject, or a host-wide ticket on the host itself) shows a Known issue badge, and offers "Open a ticket" prefilled from its rule or anomaly when none does. Hosts, monitors and containers get a Known issues card. MCP: list_tickets, get_ticket (viewer); open_ticket, update_ticket, comment_ticket, resolve_ticket, reopen_ticket (operator). list_alerts and list_anomalies carry known_issue; get_overview, get_host, get_monitor and get_container carry open_tickets. Also update_change and delete_change for changes recorded by hand (author or admin). Tickets are left out of backups, like the timeline (2026-10-15 ruling). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>