If a buyer has placed an order, but you are unable to fulfill an order (out of stock/shipping limitations), you can file a Seller Cancelation Request. Visit the “Orders” tab in your Seller Dashboard and locate the unfulfillable order. Expand the row and click “Cancel Order”:
Select a reason and click “Cancel This Order”:
All Cancelation requests are forwarded to the buyer for confirmation. Your account will be credited after 48 hours, provided the buyer does not confirm payment.
If there's an error in your account summary or account balance, file a seller charge dispute instead.