I already setup the Samsung IAP V5 SDK in my game. And setup the iap item in the Seller Portal. This iap item is consumable item. I use the StartPayment method to do the purchase. I get a response in the first purchase. But I cannot purchase the item second times. And I always get below error message.
Original post: https://developer.samsung.com/forum/board/thread/view.do?boardName=SDK&messageId=378202