Amazon FBA Labeling Requirements: Avoid Rejections
Key Points(5)
- Selling through Amazon FBA can simplify storage, shipping, and order management, but sellers still need to prepare their inventory correctly before sending it to a fulfillment center.
- Labeling is one of the details that deserves particular attention.
- A missing barcode, an unreadable sticker, or a label attached to the wrong product can delay receiving and create additional costs.
- Understanding Amazon FBA labeling requirements helps sellers reduce these risks and keep their inventory moving through the fulfillment process.
- With a consistent preparation routine, many common errors can be prevented before a shipment leaves the warehouse.
Selling through Amazon FBA can simplify storage, shipping, and order management, but sellers still need to prepare their inventory correctly before sending it to a fulfillment center. Labeling is one of the details that deserves particular attention. A missing barcode, an unreadable sticker, or a label attached to the wrong product can delay receiving and create additional costs.
Understanding Amazon FBA labeling requirements helps sellers reduce these risks and keep their inventory moving through the fulfillment process. With a consistent preparation routine, many common errors can be prevented before a shipment leaves the warehouse.
1. Understand Which Barcode Your Products Need
Every unit sent to an Amazon fulfillment center needs an eligible barcode for identification and inventory tracking. Depending on the product and the seller's eligibility, this may be a manufacturer barcode, such as a UPC or EAN, or an Amazon barcode, commonly known as an FNSKU.
The correct option depends on the product, its barcode eligibility, and the seller's status. Amazon's US barcode requirements changed on March 31, 2026: brand owners can continue using eligible manufacturer barcodes, while resellers are required to use Amazon barcodes for their products.
Sellers should check the current requirements in Seller Central before preparing a shipment. Assuming that an existing retail barcode is sufficient can lead to labeling errors, particularly when working with products sourced from other manufacturers.
2. How Amazon FBA Labeling Services Help Prevent Errors
Applying labels manually may be manageable for a small number of products. However, the process becomes more demanding when a business handles hundreds of units, several product variations, or frequent inventory replenishments.
Amazon FBA labeling services can help sellers prepare products according to the applicable requirements. Depending on the provider, these services may include printing barcode labels, matching labels to individual products, applying stickers, and checking their placement before shipment.
Some sellers complete these tasks in-house, while others use a third-party preparation provider. Amazon also offers labeling options for eligible inventory, subject to its current service terms and fees.
Regardless of the approach, the same principle applies: each label must correspond to the correct product and remain readable during receiving and storage. A documented labeling process is especially useful when multiple employees handle inventory or when products arrive directly from suppliers.
3. Follow Correct Label Placement and Printing Rules
A correctly generated barcode can still cause problems if it is printed poorly or attached in the wrong place.
Amazon's US guidance specifies that labels should be printed in black on white, non-reflective label material. Supported label dimensions generally range from 1 × 2 inches to 2 × 3 inches. Sellers should use the label format generated through Seller Central rather than changing its layout.
Placement is equally important. Barcodes should be attached to a smooth, flat surface, away from corners, curves, and package edges. Leave the required margins around the label and make sure the barcode can be scanned after any additional packaging has been applied.
When an Amazon barcode is required, other visible product barcodes generally need to be covered so the wrong code is not scanned. However, sellers must not cover safety information, required warnings, or protected authentication labels.
Before dispatch, inspect the labels for smudging, fading, wrinkles, and incorrect product information. A quick scan test can help identify printing problems before the shipment reaches the fulfillment center.
4. Prepare Shipments Properly Before Sending Them
Product labeling is only one part of FBA preparation. Packaging, shipment documentation, and box labels also need attention.
Businesses working with ecommerce fulfillment services in Florida or other locations should establish a clear procedure for preparing inventory destined for Amazon. This is particularly helpful when suppliers, warehouses, and fulfillment partners are located in different places.
The process should include checking product quantities, confirming barcode assignments, verifying packaging requirements, and matching shipping labels to the correct cartons. Existing barcodes on shipping boxes should also be removed or made unscannable when Amazon's instructions require it.
Products with special handling requirements may need additional preparation, such as protective wrapping or sealed bags. The barcode must remain accessible on the outside of the completed packaging.
Before shipping, compare the physical inventory with the shipment information in Seller Central. Resolving discrepancies at this stage is usually easier than investigating them after delivery.
5. Common Labeling Mistakes to Avoid
Several recurring mistakes can disrupt the receiving process:
- Missing labels: Individual units arrive without the required barcode.
- Incorrect assignments: A label intended for one product is attached to another.
- Unreadable printing: Smudges, fading, or poor print quality prevent scanning.
- Poor placement: Labels are applied over curves, seams, or corners.
- Conflicting barcodes: Other visible codes interfere with product identification.
- Incomplete preparation: Packaging or shipment documentation does not meet the applicable requirements.
Amazon may charge for unplanned preparation, delay receiving, or refuse noncompliant inventory, depending on the issue and applicable policies.
Amazon FBA labeling requirements are easier to manage when they are built into a repeatable preparation process. Choosing the correct barcode, applying labels accurately, checking packaging, and verifying shipment details can prevent many avoidable errors.
Sellers should review Amazon's latest guidance before each new product launch or major shipment, particularly when barcode eligibility or preparation requirements change. A few checks before dispatch can help reduce receiving problems and keep inventory available for sale.