An Amazon FNSKU (Fulfillment Network Stock Keeping Unit) label is a barcode label that is required for products that are sold and fulfilled by Amazon through the Fulfillment by Amazon (FBA) service.
The FNSKU label is unique to each product and is used to identify the product within Amazon's fulfillment centers. The FNSKU label contains a barcode that is scanned at various points in the fulfillment process, such as when the product is received at a fulfillment center, when the product is picked and packed for shipment, and when the product is shipped to the customer.
FNSKU labels are generated by Amazon and are provided to sellers through the Amazon Seller Central website. To generate an FNSKU label, sellers must first create a listing for their product on Amazon, and then select the option to generate an FNSKU label for that product.
Sellers are required to place the FNSKU label on the product, along with their own branding, before sending it to Amazon's fulfillment centers. The label must be placed in a visible location and must be able to be scanned easily.
The FNSKU is important for sellers because it allows Amazon to track inventory and for sellers to see how their products are selling and how many units are in stock.