eBay Error 83: The duration "[____]" day(s) is not available for this listing type, or invalid for category "[____]".

Why this happens

A "listing duration" value has been set, but the item is a "Fixed Price" listing. eBay only accepts a value for "duration" if the listing is an Auction. Why eBay enforces this: Fixed-price listings on eBay run until cancelled, and auctions only allow specific durations that can also vary by category. eBay rejects a duration that does not match the listing format or the category's allowed list. When it usually happens: It appears most often when an auction is converted to fixed price but keeps its old duration, or when a CSV import includes a duration column for fixed-price items.

How to fix it

This error in other languages

German: Die Angebotsdauer „…“ Tag(e) ist für dieses Angebotsformat nicht verfügbar oder für die Kategorie „…“ ungültig. French: La durée « … » jour(s) n'est pas disponible pour ce format d'annonce ou n'est pas valide pour la catégorie « … ». Italian: La durata "…" giorno/i non è disponibile per questo formato di inserzione o non è valida per la categoria "…". Spanish: La duración "…" día(s) no está disponible para este formato de anuncio o no es válida para la categoría "…".