{"id":28128,"date":"2026-10-05T15:00:00","date_gmt":"2026-10-05T07:00:00","guid":{"rendered":"https:\/\/www.survfire.com\/?p=28128"},"modified":"2026-10-20T12:14:12","modified_gmt":"2026-10-20T04:14:12","slug":"fnsku-labels-explained","status":"publish","type":"post","link":"https:\/\/www.survfire.com\/de\/fnsku-labels-explained\/","title":{"rendered":"FNSKU-Etiketten erkl\u00e4rt: Anforderungen, Formate und Zust\u00e4ndigkeiten"},"content":{"rendered":"

An FNSKU label is an Amazon item label used to identify inventory assigned to a seller. Check barcode eligibility in Seller Central, generate the correct label file, and match it to the unit before shipment.<\/p>\n\n\n\n

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<\/span>What Is an FNSKU Label?<\/strong><\/strong><\/span><\/h2>\n\n\n\n

FNSKU stands for Fulfillment Network Stock Keeping Unit. It is a unique barcode that Amazon assigns to a product listing under a specific seller account. When a unit carries an FNSKU label, Amazon’s receiving system knows exactly which seller owns that unit and can route it correctly through the fulfillment network.<\/p>\n\n\n\n

An FNSKU is not the same as an ASIN, a seller SKU, or a UPC\/EAN. Each serves a different purpose in the Amazon ecosystem. Confusing them leads to shipment rejections and lost inventory.<\/p>\n\n\n\n

Code<\/strong><\/strong><\/td>What It Identifies<\/strong><\/strong><\/td>Who Assigns It<\/strong><\/strong><\/td>Example Format<\/strong><\/strong><\/td><\/tr>
FNSKU<\/strong><\/td>A specific seller’s inventory unit<\/td>Amazon<\/td>X001ABC123<\/td><\/tr>
ASIN<\/strong><\/td>A product in Amazon’s catalog<\/td>Amazon<\/td>B07XYZ1234<\/td><\/tr>
Seller SKU<\/strong><\/td>Your internal tracking code<\/td>You (the seller)<\/td>MY-SKU-001<\/td><\/tr>
UPC\/EAN<\/strong><\/td>A product by its manufacturer<\/td>GS1 or manufacturer<\/td>012345678901<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

A critical point: a single ASIN does not share one FNSKU across all sellers.<\/strong> Each seller account generates its own FNSKU for the same ASIN. If two sellers list the same product, they will have different FNSKUs. That is the entire mechanism that prevents commingling.<\/p>\n\n\n\n

Item Labels vs. Carton Labels: Two Different Layers<\/strong><\/strong><\/h3>\n\n\n\n

FNSKU labels are item-level labels. They identify individual sellable units. Carton labels (also called FBA box ID labels or shipment ID labels) identify the outer shipping boxes in a shipment. These are separate requirements and serve different functions-.<\/p>\n\n\n\n

Every sellable unit needs its own FNSKU. Every shipping carton needs its own unique FBA box ID label printed from the shipment workflow. Do not confuse the two, and do not assume one replaces the other.<\/p>\n\n\n\n

Figure 1: FNSKU Item Label vs. Carton Label (Illustration)<\/strong><\/p>\n\n\n\n

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<\/span>Which Products Need Amazon Barcode Labels?<\/strong><\/strong><\/span><\/h2>\n\n\n\n

Not every product requires an FNSKU label. The rules changed significantly on March 31, 2026, and apply to shipments into US fulfillment centers.<\/p>\n\n\n\n

The current policy distinguishes between brand owners and resellers:<\/p>\n\n\n\n