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UPC Barcode Help/Documentation
If you are new to self-publishing, the acronyms and terminology can feel overwhelming. Three terms, in particular, often get used interchangeably even though they are completely different things: ISBN, Barcode, and Copyright. A common misconception we hear from authors is, …
ISBN vs. Copyright vs. Barcode: What’s the Difference? Read More »
The Problem: You tried to list a product on Amazon, and you saw “Error 8572: You are using UPCs, EANs, ISBNs, ASINs, or JAN codes that do not match the products you are trying to list.” If you are seeing …
How to Fix Amazon Error 8572 (GTIN Mismatch) Without Paying GS1 Read More »
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 …
If you’re publishing a book in 2025, you may be wondering whether you need an ISBN, a UPC, or both. While they look similar and both create barcodes, ISBNs and UPCs serve very different purposes. This guide breaks it down …
ISBN vs UPC: Which One Do You Need for Your Book? Read More »
Amazon KDP is one of the easiest ways to publish your book, but ISBN requirements can be confusing—especially with Amazon offering a free option. In this 2025 guide, we’ll break down exactly when you need your own ISBN, when you …
Do You Need an ISBN for Amazon KDP? (Ultimate 2025 Guide) Read More »
Publishing a book in 2025? One of the most confusing questions new authors face is: “How many ISBNs do I actually need?” Good news — the answer becomes simple once you understand one key rule: Every format and edition of …
UPC Barcodes & Product Identification · 2025 The 2025 UPC Barcode FAQ for Businesses: How to Buy UPC Codes for Your Products If your business needs UPC barcodes for products sold on Amazon, Walmart, Shopify, retail, or other marketplaces, this …
Selling on Walmart Marketplace can be incredibly rewarding — but if you’ve ever had a product rejected for a UPC issue, you know how frustrating it can be. Walmart is extremely strict about barcode accuracy, and even one small mismatch …
Common UPC Listing Errors on Walmart — and How to Fix Them Read More »
If you’re preparing to launch a product and need a UPC barcode, one of the most common questions is: “Do I need a GS1 barcode, or can I use a third-party barcode service?” This article clears up the confusion by …
Do I Need a GS1 Barcode? When to Use GS1 vs Non-GS1 Read More »
As packaging and labeling evolve, more businesses are looking beyond the traditional UPC and EAN barcodes to new technologies that can store more data in less space. One of the most talked-about options in regulated industries is the GS1 DataMatrix—a …
What Is GS1 DataMatrix? A Look at 2D Barcodes—and Why QR Codes Are Winning Read More »