Are you tired of encountering the frustrating "serial number is duplicate in your cart" error while trying to make a purchase online? This error can be a major headache, especially if you're a frequent online shopper. In this article, we'll explore the causes of this error, its consequences, and most importantly, provide you with practical solutions to resolve the issue.
On platforms like eBay or StockX, this error can appear if you bid on an item and then attempt to "Buy It Now" on the same listing in a different session. The system sees two pending transactions for the same serial number. Cancel your bid before using the fixed-price option. serial number is duplicate in your cart