Amazon FBA Update
Amazon is making a major FBA inventory change. Stickerless commingling is ending, barcode rules are changing, and sellers need to know whether they fall into the brand owner or reseller bucket.
Published March 2026 • 4 minute read
Effective, March 31, 2026.
That is the cutoff Amazon has announced for ending commingling practices.
Big Change
No More Pooled Inventory
Sellers will no longer share commingled FBA units across Amazon’s network.
Who Must Act
Resellers
If you relied on manufacturer barcodes, you may now need FNSKU labeling on every unit.
For years, Amazon allowed many FBA sellers to use stickerless, commingled inventory. That meant products with the same manufacturer barcode could be pooled together and fulfilled from whichever matching unit was closest to the customer.
That system is now going away. Amazon has announced that commingling practices will end effective March 31, 2026, along with updated eligibility criteria for using manufacturer barcodes.
Bottom line: after March 31, 2026, inventory ownership and barcode rules become much stricter. Whether this is good news or a headache depends largely on whether you are a brand owner or a reseller.
What Amazon commingling actually was
Commingling, often called stickerless inventory, allowed Amazon to use the manufacturer barcode on eligible products instead of requiring an Amazon barcode label on every unit.
If multiple sellers sent in the same product with the same barcode, Amazon could pool those units together. When a customer placed an order, Amazon could fulfill it using any matching unit in the network.
- It helped speed up fulfillment.
- It reduced labeling work for some sellers.
- It also created risk around traceability, quality control, and seller-level accountability.
What changes on March 31, 2026
Amazon is ending commingling across its supply chain. That means barcode treatment will now depend much more directly on your seller type and account status.
Brand Owners
Good news for Brand Registry brand representatives
If you are the brand owner and have the brand representative selling role in Amazon Brand Registry, you can continue using manufacturer barcodes for products that already have them.
In practical terms, that means you may no longer need Amazon barcode stickers just to prevent commingling.
Resellers
This is the group that needs to prepare now
If you are a reseller, Amazon says you will need to use Amazon barcodes (FNSKU) on products going forward, even when the product already has a manufacturer barcode on the packaging.
That means more prep work, stricter inbound processes, and less room for sloppy labeling workflows.
Why this matters
This is not just a technical barcode update. It is a meaningful shift in how Amazon wants inventory tracked, controlled, and attributed to individual sellers.
- Better traceability: inventory is more clearly tied to the seller that sent it in.
- Stronger brand protection: less mixing means fewer opportunities for bad inventory to affect good sellers.
- Operational impact: sellers who depended on stickerless workflows may need new prep steps immediately.
- Channel flexibility for brands: brand owners using manufacturer barcodes may gain cleaner inventory management across channels.
Amazon’s update effectively separates the marketplace into two camps: eligible brand owners who gain flexibility, and resellers who now need tighter labeling discipline.
Who is affected most
1. Private label and owned-brand sellers
If you control your brand and are properly positioned in Brand Registry, this change may actually simplify your operations. You may be able to avoid extra stickering while still keeping your inventory separate from other sellers.
2. Wholesale sellers, distributors, and other resellers
This group is likely to feel the biggest operational change. If you previously relied on manufacturer barcodes for eligible products, you may now need a much more robust labeling and prep process before inventory leaves your warehouse or prep center.
3. Prep centers and 3PLs
For service providers, this change raises the value of accurate FNSKU application, shipment QA, and inbound compliance. Sellers that are unprepared may see more defects, delays, or rework.
What sellers should do now
- Review your barcode settings
Confirm which SKUs currently use manufacturer barcodes and which already require Amazon labels. - Verify your Brand Registry status
Do not assume you qualify for the brand-owner exception. Check whether your selling role is set up correctly. - Audit your inbound SOPs
If you are a reseller, make sure your receiving, prep, and labeling processes are ready for FNSKU-first workflows. - Update vendor and prep instructions
Your warehouse, prep center, or supplier should know exactly which units need Amazon barcodes. - Transition early
Waiting until the deadline increases the odds of shipment defects, relabeling delays, and avoidable operational mistakes.
Simple timeline
- Before March 31, 2026 Sellers should review current barcode usage, eligibility, and prep workflows.
- March 31, 2026 Amazon’s announced effective date for ending commingling practices.
- After the cutoff Brand Registry brand representatives can continue using manufacturer barcodes where eligible, while resellers should expect Amazon barcode requirements.
Frequently asked questions
Is Amazon banning manufacturer barcodes completely?
No. Based on Amazon’s stated guidance, eligible brand owners with the proper Brand Registry role can still use manufacturer barcodes for products that already have them. The major restriction falls on resellers. Do resellers need FNSKU labels even if the product already has a UPC?
Yes, that is the key operational takeaway. Amazon’s update indicates that resellers will need Amazon barcodes even when products already carry manufacturer barcodes. Why is Amazon making this change?
The move appears designed to improve traceability, reduce inventory mixing, and tighten seller-level accountability in the FBA network. Is this good or bad for sellers?
It depends. For brand owners, it can reduce unnecessary relabeling. For resellers, it adds operational work and makes prep accuracy more important than ever.
The real takeaway
Amazon’s commingling change is bigger than it looks. It reshapes prep, labeling, and inventory accountability across FBA. Sellers who adjust early should have a smoother transition. Sellers who ignore it may run into avoidable inbound issues.
