In the case of the product which it is hard to obtain, there is the example that is demanded to attach various reasons, and to send out the substitutes such as a reservation ticket or the exchange ticket, and to click the receipt Confirm button. Fear to get into trouble is high and prohibits the business with the substitute at the Rakuten auction. Please do not bid to a product to use the substitute for. But, please talk about an end method of the business including cancellation without clicking it carelessly to mean "the remittance to a receipt confirmation = exhibitor" when I make a deal when I do not receive a product.