What is an Amazon FNSKU?

An Amazon FNSKU, which stands for “Fulfillment Network Stock Keeping Unit,” is a unique identifier used by Amazon to track and manage products in its fulfillment centers. FNSKU labels are typically required for products that are enrolled in the Fulfillment by Amazon (FBA) program.

Here’s what you need to know about Amazon FNSKU:

1. Uniqueness: Each product that you send to Amazon’s fulfillment centers must have its own unique FNSKU. This ensures that Amazon can accurately identify and track individual units of your product within their vast network.
2. Labeling Requirement: When you send products to Amazon for FBA, you are generally required to label each unit with its FNSKU. This label helps Amazon’s systems distinguish your product from others and ensures that the correct product is shipped to customers.
3. Product Identification: The FNSKU is crucial for inventory management, order fulfillment, and customer service. It allows Amazon to match customer orders with the right products in their warehouses.
4. ASIN vs. FNSKU: It’s important to note that an FNSKU is distinct from an ASIN (Amazon Standard Identification Number). While ASINs identify products on Amazon’s marketplace, FNSKUs are specific to inventory stored in Amazon’s fulfillment centers. An ASIN can be used for both FBA and merchant-fulfilled listings, whereas an FNSKU is typically used for FBA inventory.
5. Creating FNSKUs: Amazon generates FNSKUs for your products when you create listings in Seller Central and enroll them in the FBA program. You can print and attach FNSKU labels to your products yourself, or Amazon can apply them for a fee when they receive your inventory.
6. Compliance: It’s crucial to adhere to Amazon’s guidelines regarding FNSKU labeling to avoid potential issues with inventory tracking and order fulfillment. Non-compliance can result in inventory issues or additional fees.

In summary, an Amazon FNSKU is a unique identifier used by Amazon to manage and track products within its fulfillment centers. Sellers who use the FBA program should ensure that their products are correctly labeled with their respective FNSKUs to facilitate smooth inventory management and order processing on the platform.