If the product has a serial number, and the merchant wants to know which customer the products are shipped to, click to turn on the serial number feature.
Go to the product page and select either one or both serial number choices. Click to save the changes.
Require serial number when shipping - Serial number is read when the order is being packed
Require serial number when receiving - Serial number is read when unpacking the stock update
Click to open serial number info. Here you can see the orders and stock updates for the products with serial numbers.