Lena checked her purchase history. She had never bought this monitor before. She checked the seller’s stock: “2 available.” She even checked the photos—two different boxes, two different cosmetic condition notes.
The consequences of this error can be frustrating and may lead to: serial number is duplicate in your cart
In technical terms, "cart" doesn't necessarily mean a shopping cart for a new purchase. It refers to your active session pending support request Lena checked her purchase history
If none of the above works, email the merchant’s support team. Provide them with: serial number is duplicate in your cart
They matched. .