By Bernardo Campelo — Forbes Business Council E-Commerce Leader, Amazon SPN Certified provider, Amazon SP-API authorized partner, and Founder of PrepVia.
If you sell on Amazon FBA without owning the brand, 2026 is the year the rules changed on you. Amazon has tightened its policy on manufacturer barcodes — the UPCs, EANs, and ISBNs printed on the product packaging by the original manufacturer — and the impact falls hardest on resellers, arbitrage sellers, and wholesalers who are not registered as brand owners.
Under the new enforcement, only brand owners enrolled in Amazon Brand Registry can continue using manufacturer barcodes to identify units in FBA. Everyone else must apply an Amazon-issued FNSKU label on every single unit before it ships to a fulfillment center. No exceptions. No workarounds.
I run PrepVia, which is an Amazon SPN Certified prep center that labels over 13,200 units per hour for sellers of every size. I have watched this policy shift roll out across our client base, and the sellers who adapted first are the ones still shipping inventory on schedule. This guide explains exactly what changed, who it affects, and what to do about it.
The 60-second version
The policy: Amazon no longer allows non-brand-owners to use manufacturer barcodes (UPC, EAN, ISBN) for FBA identification. Manufacturer barcode use is now restricted to sellers enrolled in Amazon Brand Registry for that specific product.
Who is affected: Resellers, retail arbitrage, online arbitrage, wholesale sellers, and anyone selling branded products they do not own.
What you must do: Apply an FNSKU label on every unit before sending to FBA. Amazon will reject non-compliant units at the fulfillment center.
Who is exempt: Brand owners registered with Amazon Brand Registry selling their own branded products.
What Is a Manufacturer Barcode on Amazon?
A manufacturer barcode is the standard product identifier printed on the retail packaging by the original brand or manufacturer. In the United States and Canada, this is almost always a UPC (Universal Product Code). In Europe and most other regions, it is an EAN (European Article Number). Books use an ISBN.
Historically, Amazon gave FBA sellers two options for identifying units inside fulfillment centers:
- Stickerless, Commingled Inventory — also called the "stickerless" setting. Amazon scanned the manufacturer barcode already on the packaging. Your units were pooled with other sellers of the same UPC, and when a customer ordered, Amazon shipped from the nearest available unit regardless of who originally sent it.
- FNSKU Labeling — Amazon generated a unique, seller-specific barcode called the FNSKU (Fulfillment Network Stock Keeping Unit). You printed and applied this label to every unit. Amazon tracked your units separately from other sellers.
Stickerless commingling saved resellers time and money because no labeling was required. Just ship the product in its original packaging and Amazon handled the rest. That option is what Amazon has now restricted.
The Policy Change in 2026: What Actually Changed
Amazon has been quietly tightening access to stickerless commingling for years, but 2026 is the year it became a hard rule for non-brand-owners. Here is what changed in practical terms:
1. Stickerless is now gated by brand ownership
To enroll a product in the Stickerless, Commingled Inventory program, you must demonstrate brand ownership through Amazon Brand Registry. Sellers who cannot prove they own the brand are no longer eligible, even if they successfully used stickerless in previous years.
2. Existing stickerless enrollments are being revoked
Amazon has been sending notifications to resellers informing them that their stickerless status has been removed for products where they cannot verify brand ownership. The message typically reads that "the product identification method for this SKU has been changed to Amazon barcode (FNSKU)" and requires action before the next shipment.
3. Non-compliant shipments are being rejected
Units arriving at Amazon fulfillment centers without a valid FNSKU label on non-brand-owner accounts are being flagged, returned, or destroyed. Amazon charges an unplanned services fee to apply labels internally — and that fee has climbed significantly, making it economically worse than labeling yourself.
4. Enforcement is automated at the inbound level
Amazon's receiving systems now check barcode type against seller account status at intake. If a reseller tries to send stickerless units under a UPC they do not own, the mismatch is detected before the shipment even completes check-in.
FNSKU vs Manufacturer Barcode: The Real Difference
Understanding which barcode applies when is the foundation of staying compliant. Here is the distinction:
| Feature | Manufacturer Barcode (UPC / EAN) | FNSKU (Amazon Barcode) |
|---|---|---|
| Who issues it | Manufacturer / brand owner (GS1) | Amazon — per seller, per SKU |
| Who can use it for FBA (2026) | Brand owners enrolled in Brand Registry only | All sellers |
| Inventory pooling | Commingled (shared with other sellers of same UPC) | Separated (your units tracked independently) |
| Labeling required before FBA | No — already on packaging | Yes — applied to every unit |
| Risk of receiving counterfeits | Higher — your units pooled with others | Lower — only your units fulfill your orders |
| Cost per unit | $0 (no labeling step) | $0.05 – $0.25 (labeling service) |
| Suitable for | Brand owners, private label | Resellers, arbitrage, wholesale, brand owners preferring separation |
Even many brand owners are now choosing FNSKU over manufacturer barcodes voluntarily, because commingling exposes their listings to counterfeit or damaged units that other sellers ship. Separation through FNSKU protects review scores, return rates, and brand reputation.
Why Amazon Made This Change
The policy shift is not arbitrary. From Amazon's perspective, it solves three real problems:
Counterfeit and quality control
Commingled inventory is one of the biggest vectors for counterfeit products on Amazon. When a brand owner ships genuine units under UPC 123456789012 and a bad actor ships counterfeit units under the same UPC, Amazon's system cannot always tell the difference at fulfillment. When a customer complains, the legitimate brand owner takes the reputation hit. Brand-owner-only commingling eliminates this problem structurally.
Brand Registry alignment
Amazon has invested heavily in Brand Registry as the mechanism for authorizing brand control on the platform. Gating manufacturer barcode usage behind Brand Registry enrollment strengthens the program and makes it more valuable for enrolled brands.
Reducing rights complaints
Intellectual property complaints are a major source of account suspensions and support load. When every reseller carries a unique FNSKU, disputes about who shipped which unit become trivial to resolve. Amazon reduces arbitration cost.
Who Is Actually Impacted
Not every seller needs to change anything. Here is the breakdown:
- You are a retail arbitrage seller (buying from physical stores to resell)
- You are an online arbitrage seller (buying from other retailers online to resell)
- You are a wholesaler buying from distributors or brands you do not own
- You are a reseller of any branded product where you are not the brand owner
- You are a dropshipper or private label seller without Brand Registry enrollment
- You own the brand and are enrolled in Amazon Brand Registry for that product
- The UPC is registered to your company at GS1
- Your Brand Registry status is active and in good standing
- The specific ASIN is covered by your Brand Registry enrollment
Even brand owners should consider switching to FNSKU voluntarily. Many of the top private label sellers I work with use FNSKU even though they qualify for stickerless, because it gives them cleaner inventory control and protects against inventory contamination.
The Cost of FNSKU Labeling at Scale
If you are suddenly required to label every unit, the economic question is: what does this actually cost?
Self-labeling is possible but rarely efficient. A single worker manually printing and applying FNSKU labels handles roughly 200 to 400 units per hour. At a fully loaded labor cost of around $20 per hour including overhead, that is $0.05 to $0.10 per unit in labor alone — plus label stock, printer depreciation, and the opportunity cost of time you are not spending on product research or marketing.
Outsourced labeling through a prep center typically costs $0.05 to $0.25 per unit depending on volume, location, and included services. The math usually favors outsourcing once you are processing more than a few hundred units per week.
At PrepVia, our automated labeling lines process 13,200 units per hour, which is 30 to 60 times faster than manual labeling. We charge from $0.40 per unit for full FBA prep including FNSKU labeling, and 0% sales tax applies on all prep services in Florida. See the full FBA labeling service breakdown.
Action Plan If You Are a Reseller
- Audit your active SKUs. Log into Seller Central and check the "Product identification method" for every active FBA SKU. Any SKU flagged as stickerless or "Manufacturer barcode" is at risk if you are not the brand owner.
- Request Amazon Brand Registry if you own any brands. If you actually own a private label brand, enroll now. Brand Registry takes 1 to 2 weeks to approve and unlocks many other protections beyond barcodes.
- Update non-brand SKUs to FNSKU. For every SKU where you are not the brand owner, change the identification method to Amazon barcode (FNSKU) in the listing settings.
- Print and apply FNSKU labels on all new inbound inventory. Do not ship a single unit to FBA without an FNSKU label unless you have confirmed brand-owner stickerless eligibility.
- Outsource labeling if volume justifies it. Once you are labeling more than 500 units per week, a prep center is almost always cheaper than in-house labor plus equipment.
- Do not ship existing stickerless inventory without checking. Your account may have been auto-switched to FNSKU-required. Shipping old stickerless inventory could trigger a compliance rejection.
Action Plan If You Are a Brand Owner
- Confirm your Brand Registry status. Make sure your enrollment is active for every ASIN you sell. Gaps or lapses can cause stickerless access to be revoked automatically.
- Decide: commingled or FNSKU? Stickerless saves labeling cost but exposes you to counterfeit units in the commingled pool. FNSKU isolates your inventory completely. For most brand owners with active listings, FNSKU is the safer long-term choice.
- If you choose stickerless, monitor review scores. If you see a sudden drop in star rating or an increase in "not as described" returns, check whether other sellers on the same UPC may be shipping counterfeits or damaged units. Switch to FNSKU immediately if that happens.
- If you choose FNSKU, outsource labeling. Manual labeling does not scale. A prep center like PrepVia handles it at a fraction of your in-house cost.
How PrepVia Handles the Transition
At PrepVia we have already migrated hundreds of reseller accounts through this change. Our workflow looks like this:
- Automated inbound check. When your inventory arrives, our WAZIN AI reads your shipment manifest and cross-references the UPC and FNSKU status against your Amazon account.
- Automatic labeling at 13,200 units per hour. Our automated labeling lines apply FNSKU labels with 99.9% scan accuracy, covering standard, oversize, and multi-SKU shipments.
- Quality control scan. Every labeled unit is verified against a second scanner to confirm the correct FNSKU was applied before boxing.
- Shipment creation and dispatch. PrepVia Express creates the Amazon shipment via API in approximately 7 minutes, and your units move to FBA within our 24 to 36 hour prep SLA.
For eligible shipments, our FastLane 35H program guarantees the full cycle from PrepVia check-in to Amazon FBA delivered status in 35 hours or prep is free.
See PrepVia's FBA labeling service →
13,200 units/hour · 99.9% scan accuracy · Amazon SPN Certified · From $0.40/unit
Frequently Asked Questions
Is Amazon really banning manufacturer barcodes?
Amazon is not banning them outright. Manufacturer barcodes (UPC, EAN, ISBN) are still used and valid. What Amazon has changed is who is allowed to use them as the FBA identification method. Starting in 2026, only sellers enrolled in Amazon Brand Registry for a specific product can continue using manufacturer barcodes for commingled, stickerless fulfillment. Everyone else must apply FNSKU labels.
What happens if I ship stickerless inventory without being the brand owner?
Amazon is rejecting, returning, or destroying non-compliant units at fulfillment centers. In some cases Amazon will apply labels for you and charge a per-unit unplanned services fee, which is significantly more expensive than prepping the labels yourself. Repeated non-compliance can also lead to account warnings.
How do I switch a SKU from manufacturer barcode to FNSKU?
In Seller Central, go to Inventory, find the SKU, click Edit, and change the "Product identification method" from Manufacturer barcode to Amazon barcode (FNSKU). Amazon will generate an FNSKU that you must print and apply to every unit of that SKU before your next FBA shipment.
Can I still sell branded products I do not own on Amazon?
Yes. The policy change does not restrict what you can sell, only how you identify units going to FBA. You can continue selling branded products you do not own as long as you apply FNSKU labels on every unit and comply with Amazon's selling eligibility rules for the category.
What is the cheapest way to apply FNSKU labels at scale?
For volumes under 500 units per week, self-labeling with a thermal label printer works. For anything above that, a prep center almost always wins on total cost once you include labor, equipment, error rates, and your own time. Automated prep centers process tens of thousands of units per hour with scan verification, which is impossible to match with manual labor.
Does this affect international sellers on Amazon EU or UK?
Yes, the same policy direction applies across Amazon's global marketplaces. Brand owners using EAN or ISBN for stickerless fulfillment must be enrolled in Brand Registry for the relevant marketplace. Non-brand-owners selling in EU and UK must use Amazon-issued labels on every unit.
Does this affect Amazon Vendor Central?
Vendor Central operates on a different workflow where Amazon purchases inventory directly from the supplier. The barcode policy described here applies to Seller Central FBA, not Vendor Central. If you are a 1P vendor, your barcode handling is governed by your vendor agreement.
Final Take
This policy change is not a temporary enforcement push. It is a structural shift that aligns Amazon's inventory model with its long-term push toward brand-registered commerce. Resellers who adapt quickly — by updating SKUs, applying FNSKU labels on every unit, and outsourcing labeling at scale — will continue operating without disruption. Those who ignore the change will face rejected shipments, account warnings, and lost sales.
Manufacturer barcodes are not going away. They are just becoming a privilege of brand ownership instead of a shortcut for everyone. If you own your brand, this is a net positive. If you resell, the work of labeling every unit is now non-negotiable — and the cheapest way to do that at any serious volume is through an automated prep center.
If you need help moving to FNSKU-on-every-unit without slowing down your operation, schedule a 15-minute call with PrepVia. We have processed this transition for hundreds of sellers already.
