Category: Documentation

UPC Barcode Help/Documentation

    At UPCs.com, we help thousands of businesses officially launch their products every year. But we know that buying a barcode is just the beginning. As you scale, your brand becomes an asset—and unfortunately, a target. In the current …

The One Step Most New Sellers Forget (Until It’s Too Late) Read More »

Amazon KDP is a fantastic place to start your self-publishing journey. It’s easy, free, and gets your book in front of millions of readers. But eventually, most successful authors want more. You want your book on the shelves of local …

Moving from KDP to IngramSpark: The “Portable” ISBN Advantage Read More »

Congratulations! You’ve successfully published a series of books. Now, you want to maximize your revenue by bundling them together into a “box set” or omnibus edition for your readers. This leads to one of the most common questions we receive …

Box Sets & Bundles: The “One vs. Many” ISBN Rule Read More »

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 …

Amazon FBA UPC Requirements Explained: Valid Barcodes, Documentation, and Error-Proof Listing Setup Read More »

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 …

ISBNs 101: How Many Do You Need for Different Formats? (Paperback, Hardcover, Audiobook, eBook) Read More »

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 …

The Ultimate UPC FAQ Guide for 2025 Read More »

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