Most eBay categories require a condition value (New, Used, For Parts, etc.), and the allowed values vary by category. Missing or invalid conditions block the listing.
How to fix it
Look up valid ConditionID values for your category via the GetCategoryFeatures API or eBay's category-feature reference.
Most categories use: 1000 (New), 1500 (New other), 2000 (Manufacturer refurbished), 2500 (Seller refurbished), 3000 (Used), 7000 (For parts/not working).
Some categories (e.g., trading cards, collectibles) have specialized condition codes — use the category-specific values.
If the condition is 'Used', also fill in ConditionDescription with details on wear/damage.
Common pitfalls
Submitting condition '1000' (New) for categories that don't support it — many used-only categories reject this
Mixing condition values across variations within a single multi-variation listing
