If you're selling products online, you've likely encountered GTIN (Global Trade Item Number) requirements. Major e-commerce platforms like Amazon, Shopify, Google Shopping, and eBay require GTINs for product listings. This comprehensive guide explains everything you need to know about GTIN requirements, how to obtain them, and how to use them correctly across different platforms.
What is a GTIN and Why Do You Need One?
A GTIN is a unique identifier for products that enables accurate product identification across global supply chains. GTINs come in several formats: GTIN-8 (EAN-8), GTIN-12 (UPC), GTIN-13 (EAN-13), and GTIN-14. These numbers are encoded in barcodes and QR codes, allowing products to be scanned and identified instantly.
E-commerce platforms require GTINs because they enable:
- Accurate product matching and cataloging
- Prevention of duplicate listings
- Improved search results and product discovery
- Inventory management and tracking
- Compliance with marketplace policies
Amazon GTIN Requirements
Amazon has strict GTIN requirements for most product categories. Here's what you need to know:
When GTINs are Required
- Most product categories require GTINs (UPC, EAN, or ISBN)
- New product listings must include valid GTINs
- GTINs must be registered with GS1 and match your brand
- Private label products still need GTINs
Common Amazon GTIN Mistakes
- Using GTINs from other sellers: Each brand must own their GTINs
- Buying GTINs from unauthorized resellers: Only purchase from GS1
- Reusing GTINs for different products: Each product variant needs a unique GTIN
- Incorrect GTIN format: Ensure you're using the correct format for your region
Shopify GTIN Requirements
Shopify requires GTINs for products listed on Google Shopping and other sales channels. While not mandatory for basic Shopify stores, GTINs are essential for:
- Google Shopping ads and listings
- Facebook and Instagram Shopping
- Multi-channel selling
- Inventory synchronization
How to Get GS1 Barcodes
Step 1: Contact Your Local GS1 Organization
GS1 is the only authorized issuer of GTINs. Contact your local GS1 member organization (GS1 US, GS1 UK, etc.) to obtain a Company Prefix. The prefix length depends on how many products you plan to identify.
Step 2: Choose Your Prefix Length
- Small business: 6-8 digit prefix (covers 1-1,000 products)
- Medium business: 7-8 digit prefix (covers 1,000-10,000 products)
- Large enterprise: 8-12 digit prefix (covers 10,000+ products)
Step 3: Assign GTINs to Products
Once you have your prefix, assign unique GTINs to each product variant. Remember: different sizes, colors, or packaging require different GTINs.
GTIN Requirements by Platform
eBay
eBay requires GTINs for most categories, especially electronics, clothing, and home goods. GTINs help improve listing visibility and prevent listing removal.
Google Shopping
Google Shopping requires GTINs for all products. Without GTINs, your products won't appear in Google Shopping results or ads.
Walmart Marketplace
Walmart requires GTINs for all products and verifies them against GS1 databases. Invalid GTINs result in listing rejection.
Best Practices for GTIN Management
- Register with GS1: Always obtain GTINs from authorized GS1 organizations
- Maintain accurate records: Keep track of which GTINs are assigned to which products
- Use consistently: Use the same GTIN across all platforms for the same product
- Update product data: Keep product information synchronized in GS1 databases
- Don't reuse GTINs: Once assigned, a GTIN should never be reused for a different product
Common GTIN Questions
Do Private Label Products Need GTINs?
Yes, even private label products require GTINs if you're selling on major marketplaces. You must obtain your own GS1 Company Prefix and assign GTINs to your products.
Can I Buy GTINs from Third-Party Sellers?
No. GTINs purchased from unauthorized resellers are invalid and will cause listing problems. Only purchase GTINs directly from GS1 organizations.
How Much Do GTINs Cost?
GS1 Company Prefix costs vary by country and prefix length. In the US, a small business prefix starts around $250/year. This is a one-time annual fee that covers all GTINs you create with that prefix.
Understanding and properly implementing GTIN requirements is essential for e-commerce success. By obtaining legitimate GS1 barcodes and using them correctly across platforms, you ensure your products are discoverable, compliant, and ready for global sales. Take the time to set up GTINs correctly from the start—it will save you headaches and listing rejections down the road.