eBay shipping errors stem from missing/invalid shipping service codes, incorrect package dimensions, weight outside service limits, or destinations not allowed for the shipping service selected.
How to fix it
Use valid ShippingServiceCode values from the GeteBayDetails API — these vary by site (US, UK, etc.) and change periodically.
Provide accurate package dimensions (L×W×H) and weight — eBay calculates rates and rejects out-of-bounds values.
Don't ship to destinations the carrier doesn't serve — use ExcludeShipToLocation to remove unserviceable countries/regions.
Set up a shipping policy in Seller Hub → Business Policies — much easier than per-listing shipping settings.
Common pitfalls
Missing shipping rate for international ShipToLocations — listing fails internationally even if domestic works
Using a USPS Flat Rate service code with package dimensions that don't fit a flat rate box
