Amazon FBA UPC Requirements Explained: Valid Barcodes, Documentation, and Error-Proof Listing Setup
Before your product can go live on Amazon, you need a valid, unique UPC barcode.
At UPCs.com, we’ve helped 50,000+ businesses launch on Amazon and retailer stores worldwide with real, verifiable, GS1-origin UPC barcodes that work across major marketplaces.
Buy UPC Barcodes for AmazonAre UPCs.com Barcodes Accepted by Amazon?
Yes. Thousands of Amazon sellers successfully use UPCs.com barcodes to list their products every day. Amazon requires:
- A unique GTIN (UPC or EAN)
- A valid GS1-origin barcode
- A number that has not been used before
UPCs.com provides:
- Authentic, GS1-origin UPCs
- Instant digital delivery after checkout
- Lifetime ownership – no annual renewal fees
Our barcodes are used on Amazon, Walmart, Shopify, and retailer stores worldwide.
Common Amazon UPC Errors – And How to Fix Them
Even with valid UPCs, Amazon’s automated systems can sometimes generate errors for new brands or new listings. Here are the three most common issues and how to resolve them quickly.
1. “Invalid GTIN” or “UPC Already Exists”
This can appear when Amazon is verifying the GTIN against its catalog or the GS1 database, or when its system temporarily mismatches the prefix.
How to fix it:
- Contact Amazon Seller Support.
- Explain that your UPC is a valid GS1-origin barcode purchased from UPCs.com.
If Amazon asks for verification, we can provide a Letter of Affiliation and Certificate of Authenticity that confirm your UPCs are real, unused, and assigned to you.
2. “Brand Not Recognized” or UPC Restrictions
New brands or unregistered brands in Amazon’s system sometimes trigger additional checks.
How to fix it:
- Provide proof of brand: website, logo, packaging, or product images.
- Attach your UPCs.com invoice.
- If requested, include our Letter of Affiliation to show UPC ownership.
Amazon uses this information to confirm that your brand and GTINs are legitimate.
3. “GTIN Does Not Match the Brand”
This happens when Amazon’s system auto-matches your listing to an existing catalog entry that doesn’t belong to you.
How to fix it:
- Open a case with Amazon Seller Support.
- Explain that this is a unique product with a unique UPC purchased from UPCs.com.
- Request that Amazon remove the incorrect catalog match and review your GTIN documentation.
Our documentation helps clear up any mismatches quickly.
Letters & Certificates That Resolve Amazon Issues
As an established barcode provider, UPCs.com can issue documentation that Amazon accepts as proof of barcode legitimacy and ownership.
- Letter of Affiliation – confirms your UPCs are real, unused, and assigned to your company.
- Certificate of Authenticity – formal document listing your company and associated GTINs.
- Prefix Documentation (upon request) – supports GS1-origin verification when needed.
If Amazon ever asks for a “GS1 Certificate” or proof that you own your GTINs, our documentation satisfies those requests.
To request documentation, email us at: [email protected] with your order number and a brief description of the Amazon error.
GS1 vs UPCs.com – What’s the Difference?
Many sellers are surprised by how expensive and complex GS1 can be for small brands. Here’s a simple side-by-side comparison.
| GS1 | UPCs.com | |
|---|---|---|
| Pricing | High upfront fees + annual renewal costs. | Low one-time cost per UPC. No renewal fees. |
| Ownership | You effectively rent prefixes; ongoing membership required. | You own your UPCs for life once purchased. |
| Delivery | Setup time, paperwork, and configuration. | Instant digital delivery via email and account. |
| Support for Amazon Issues | General GS1 support, not Amazon-specific. | Amazon-focused guidance, letters, and certificates to resolve GTIN errors. |
| Ideal For | Large corporations and high-volume brand portfolios. | Small to medium brands, Amazon FBA sellers, DTC and marketplace sellers. |
If you want reliable, compliant barcodes without the ongoing costs and complexity of GS1 membership, UPCs.com is a powerful, seller-friendly alternative.
How to Use UPCs.com Barcodes on Amazon (Step-by-Step)
- Purchase your UPCs from UPCs.com.
- Assign each UPC to one product or variation (color, size, pack size, etc.).
- In Amazon Seller Central, choose Product ID Type = UPC and enter the correct code.
- If Amazon flags an error, open a support case and, if needed, request documentation from us.
With valid UPCs and proper documentation, any GTIN or brand-related error can be resolved.
Need Help With an Amazon UPC Error?
If you’re stuck with a GTIN error, “invalid UPC” message, or brand mismatch, we’re here to help.
Email our team at [email protected] with your Amazon case details and order number, and we’ll prepare the right documents to support your listing.
Get Your Amazon-Ready UPCs Now