Identifiers

A library item with no TMDB id is close to invisible to the rest of Kustos: collections dedupe on TMDB id, artwork candidate lookup keys off it, and the poster/title-card pipeline can't find the title. Nothing errors — the title just quietly isn't there.

When correcting ids: a field left blank keeps whatever Sonarr/Radarr reported. Blank does not mean "clear this". To drop a correction entirely, use Remove correction.

TMDB numbers movies and shows separately, so the id and its namespace only mean something together. Saving an id under the other namespace means Kustos looks the title up on that side, and season/episode artwork won't apply to it.