EAN UPC GTIN Explained: 3 Essentials for Better Listings
EAN UPC GTIN barcode differences are one of the most common sources of confusion for ecommerce sellers managing Amazon, FNAC, Cdiscount, Shopify, PrestaShop, Magento, and international marketplace listings.
This EAN UPC GTIN guide is written for merchants who need practical barcode answers for marketplace listings, product feeds, and ecommerce catalog management. It also covers key questions such as EAN code vs UPC, EAN vs GTIN vs UPC, EAN to UPC conversion, and how to choose reliable services for retail EAN purchasing.
Many sellers only discover barcode issues after seeing errors such as invalid EAN, incorrect UPC format, GTIN missing, product identifier mismatch, or feed rejection errors.
This guide explains barcode systems from an ecommerce seller perspective. You will learn how EAN, UPC, and GTIN codes work, how marketplaces use them, how to avoid rejected listings, and how to keep barcode data consistent across your ecommerce store and marketplace feeds.
Table of Contents
EAN UPC GTIN Barcodes and Marketplaces
Marketplaces rely on product identifiers to connect merchant offers with the correct product records. In many ecommerce workflows, this means using an internal product reference, such as an SKU, together with an external barcode identifier such as EAN, UPC, or GTIN.
Your SKU identifies the product inside your store, while the barcode helps marketplaces recognize the product inside their catalog systems. This is why barcode management is part of maintaining a healthy product catalog across Amazon, FNAC, Cdiscount, Mirakl marketplaces, Shopify, PrestaShop, Magento, and other ecommerce systems.
When a product is uploaded to a marketplace, barcode information may be used to match products, validate catalog data, prevent duplicates, synchronize inventory, and connect offers to the correct product page. Without valid barcode data, merchants may face feed rejection, invalid EAN errors, suppressed listings, or incorrect matching.
For merchants, accurate barcode data makes products easier to identify, match, and distribute across multiple sales channels.
Why Barcodes Matter for Marketplace Sellers
Barcodes help marketplaces identify products consistently across global catalog systems.
When a product is uploaded to Amazon, FNAC, Cdiscount, Mirakl based marketplaces, or another ecommerce marketplace, barcode information may be used to:
- match existing products
- validate catalog data
- identify product ownership
- prevent duplicate listings
- synchronize inventory
- connect offers to the correct product page
Without valid barcode information, merchants may encounter feed rejection, invalid EAN errors, suppressed listings, duplicate product conflicts, or incorrect product matching.
What Is an EAN Code?
EAN stands for European Article Number.
EAN barcodes are widely used across Europe and many international marketplaces. The most common ecommerce format is EAN 13.
EAN 13 Format
EAN 13 contains:
- 13 numeric digits
- a GS1 prefix
- company or manufacturer identification
- product reference digits
- check digit
Example:
5901234123457EAN codes are commonly used across:
- Amazon Europe
- FNAC
- Cdiscount
- Mirakl marketplaces
- European retail systems
- international ecommerce platforms
For sellers researching EAN barcodes, the most important point is that the code should be valid, unique to the product, and accepted by the marketplace where the product will be listed.
What Is a UPC Code?
UPC stands for Universal Product Code.
UPC codes are most commonly used in:
- United States
- Canada
- North American retail systems
The standard UPC format used in ecommerce is UPC A.
UPC A Format
UPC A contains:
- 12 numeric digits
- manufacturer code
- product identifier
- check digit
Example:
012345678905UPC codes are commonly used across Amazon US, Walmart, North American retail systems, and US based marketplace workflows.
What Is a GTIN?
GTIN stands for Global Trade Item Number.
GTIN is not a separate barcode style. It is the global product identifier family that includes several barcode related formats.
GTIN includes:
- GTIN 12, commonly associated with UPC
- GTIN 13, commonly associated with EAN or JAN
- GTIN 8, used for smaller products
- GTIN 14, often used for cases or packaging
Think of GTIN as the umbrella standard. EAN and UPC are common barcode formats within that broader GTIN system.
EAN Code vs UPC: What Is the Difference?
EAN code vs UPC is one of the most common barcode questions for ecommerce sellers.
The main difference is the number of digits and where each format is most commonly used. UPC contains 12 digits and is commonly used in the United States and Canada. EAN contains 13 digits and is commonly used in Europe and many international marketplaces.
For marketplace sellers, the right format usually depends on where the product is sold, what identifier already belongs to the product, and what the target marketplace requires.
EAN vs GTIN vs UPC: How These Terms Connect
EAN vs GTIN vs UPC can feel confusing because marketplaces, product feeds, and seller documentation sometimes use different terms.
The easiest way to understand the relationship is that GTIN is the global product identifier family. UPC is commonly GTIN 12, EAN is commonly GTIN 13, GTIN 8 is commonly used for smaller products, and GTIN 14 is commonly used for cases or packaging.
So when a marketplace asks for a GTIN, it may be asking for a valid global product identifier. Depending on the marketplace, region, and product category, that identifier may be an EAN, UPC, ISBN, JAN, or another supported GTIN format.
EAN vs UPC vs GTIN Comparison Table
The EAN UPC GTIN comparison below shows how these product identifiers differ in structure, region, and marketplace use.
| Feature | EAN | UPC | GTIN |
|---|---|---|---|
| Full Name | European Article Number | Universal Product Code | Global Trade Item Number |
| Standard Length | 13 digits | 12 digits | Variable |
| Primary Region | Europe and international markets | US and Canada | Global |
| Common Usage | International marketplaces | North American retail | Global product identifier framework |
| Barcode Family | GTIN 13 | GTIN 12 | Master identifier family |
| Marketplace Use | FNAC, Cdiscount, Amazon Europe | Amazon US, Walmart | Amazon and global catalogs |
This comparison table should be the visual centerpiece of the article because it gives merchants a quick answer without requiring technical barcode knowledge.
Which Barcode Do You Need by Marketplace?
| Marketplace | Common Barcode Requirement |
|---|---|
| Amazon US | UPC or accepted GTIN format |
| Amazon Europe | EAN or accepted GTIN format |
| FNAC | Commonly relies on EAN or GTIN identifiers |
| Cdiscount | Uses GTIN or EAN 13 product identifiers |
| Mirakl marketplaces | Varies by marketplace and category |
| Private label products | GTIN or approved exemption may apply |
| Handmade products | GTIN exemption may apply depending on marketplace rules |
Amazon Marketplace
Amazon generally supports product identifiers such as UPC, EAN, ISBN, JAN, or GTIN depending on the marketplace, product category, brand, and listing requirements.
FNAC Marketplace
FNAC commonly relies on EAN or GTIN product identifiers for catalog matching, product creation, and marketplace feed submissions.
Cdiscount Marketplace
Cdiscount uses GTIN or EAN 13 product identifiers for product identification, catalog matching, and marketplace offer workflows.
Mirakl Marketplaces
Mirakl based marketplaces can vary depending on the retailer, product category, and feed specification.
SKU and EAN Pairs in Marketplace Feeds
A clean EAN UPC GTIN structure helps keep product identifiers aligned with SKU data across marketplace feeds.
Marketplace product identification often depends on both the seller’s internal product reference and the product barcode.
In ecommerce operations, SKU identifies the product inside your store or inventory system, while EAN, UPC, or GTIN identifies the product in marketplace and retail catalog systems.
For marketplace feeds, each product or combination should have one unique SKU, one valid barcode identifier when required, and no duplicated barcode assigned to unrelated products.
Internal or Private EAN Codes
Some companies use internal or private product codes for products that do not have official retail barcodes.
Private or internal EAN code sequences may start with 2, such as 2009994102330.
These codes may be useful for internal reference, local systems, or products sold loose, but they may not be accepted by all marketplaces and can limit external marketplace expansion.
If your products are eligible for official barcode identifiers, it is usually safer to obtain legitimate product identifiers instead of relying on internal codes.
How to Get Legitimate Barcode Numbers
One of the most common ecommerce mistakes is purchasing barcode numbers from unreliable sources.
Invalid barcode ownership may create listing suppression, marketplace feed conflicts, GTIN validation problems, duplicate catalog issues, or brand ownership disputes.
GS1 is the official global barcode organization.
If you need official barcode numbers, start with the GS1 global barcode page: GS1 Global: Get a Barcode.
For France based merchants, GS1 France also provides a dedicated page for obtaining GTIN and EAN/UPC barcode numbers: GS1 France: Obtenir un code GTIN, un code-barres EAN/UPC.
Advantages include official ownership, global legitimacy, marketplace trust, and scalable brand infrastructure. Potential disadvantages include higher upfront cost, possible recurring fees, and country-specific registration steps.
Barcode Resellers and Barcode Generators
Some sellers purchase barcodes through reseller services because they may appear faster or less expensive than official registration.
Be careful with barcode generators or barcode sale sites that promise instant EAN codes without clear ownership. At best, these codes may only work for internal use. At worst, they may already belong to another product or fail marketplace validation.
Best Services for Retail EAN Purchasing
When sellers search for the best services for retail EAN purchasing, the most important factor is not only price. It is barcode legitimacy.
The safest option is usually GS1 because GS1 is the official global organization for barcode registration.
Before purchasing EAN or UPC codes, check whether the provider is legitimate, whether the barcode can be used for marketplace listings, whether ownership can be verified, and whether your marketplace requires GS1 issued identifiers.
A low cost barcode can become expensive if it causes rejected listings, product matching errors, or feed validation problems later.
EAN to UPC Conversion Explained
EAN to UPC conversion is another common source of confusion.
EAN and UPC are closely related systems. In some cases, a UPC can be represented in EAN format by adding a leading zero.
Example:
| UPC | EAN Equivalent |
|---|---|
| 123456789012 | 0123456789012 |
However, marketplace acceptance still depends on product category, marketplace region, catalog rules, barcode ownership validation, and product identifier requirements.
Before converting UPC into EAN format, always check whether the target marketplace accepts the converted format and whether the barcode remains valid for the product being listed.
For ecommerce sellers, the safest approach is to use the product identifier format requested by the marketplace whenever possible.
GTIN Exemptions for Amazon and Marketplaces
Some products may qualify for GTIN exemption, but approval depends on the marketplace, product category, brand, and listing requirements.
Products that may require GTIN exemption review include private label products, handmade products, custom products, bundled items, and products manufactured without barcodes.
In some Amazon cases, sellers may also encounter alternative identifier or exemption workflows. Older Amazon documentation and workflows have referred to GCID, or Global Catalog Identifier, as an alternative catalog identifier in some situations.
Sellers should not assume exemption applies automatically. Before listing products without standard barcode identifiers, check the marketplace’s current exemption process and submit the required information for approval.
Check out List products that do not have a product ID (UPC, EAN, JAN, or ISBN) for more information.
Common Barcode Errors and How to Fix Them
Many EAN UPC GTIN errors come from missing values, duplicated identifiers, invalid check digits, or barcode numbers assigned to the wrong product.
An invalid EAN error usually means the marketplace could not validate the barcode value submitted with the product feed.
Common causes include incorrect digit length, invalid check digit, formatting mismatch, barcode assigned to another product, or a barcode source that cannot be verified.
If you are troubleshooting this inside the Amazon Market Place module, review the Common Services documentation article: Inconsistency – The EAN/UPC code seems wrong. Skipping product. – Amazon Marketplace Plus.
Marketplaces may reject listings when barcode data does not match expected product identifier requirements. This can happen when the barcode format is not accepted, the GTIN or EAN value is missing, or the barcode conflicts with an existing catalog record.
Incorrect synchronization may also cause a product to match the wrong catalog entry, especially when barcode data is reused, copied incorrectly, or mapped inconsistently between ecommerce platforms and marketplace feeds.
A clear EAN UPC GTIN structure helps merchants reduce barcode errors before products are sent to marketplaces.
PrestaShop Product Sheets, Combinations, and EAN Codes
A valid PrestaShop product sheet should use unique product references and unique EAN barcodes.
For a simple product, you should have:
- one unique product reference
- one unique EAN, UPC, or GTIN when required
The interface may vary depending on your PrestaShop version, but the principle remains the same: each product or product combination should have a unique reference and the correct barcode value.
For a product with combinations, each combination should have:
- its own unique reference
- its own barcode identifier when required
- no duplicated EAN assigned to multiple product combinations
This matters because marketplace feeds often treat combinations as separate sellable items. If a PrestaShop generator duplicates the main product reference across combinations, those combinations may need to be corrected before marketplace export.
A clear EAN UPC GTIN setup helps merchants reduce barcode confusion before products are submitted to marketplaces.
Managing Barcode Data Across Shopify and PrestaShop
As catalogs expand, one incorrect EAN, UPC, or GTIN value can affect marketplace approval, catalog matching, and product synchronization.
For Shopify merchants, CS Amazon Sync for Shopify helps synchronize barcode data, product listings, inventory information, marketplace attributes, and multi channel workflows.
For PrestaShop merchants, Amazon Market Place Plus Module for PrestaShop supports synchronization workflows that include EAN fields, UPC fields, product validation, and marketplace feed alignment.
Our marketplace modules help validate and synchronize barcode information across ecommerce platforms and marketplaces, reducing rejected listings caused by invalid, missing, or inconsistent EAN, UPC, or GTIN data.
Frequently Asked Questions
What is the difference between EAN and UPC?
EAN contains 13 digits and is commonly used internationally, especially in Europe. UPC contains 12 digits and is primarily used in North America.
Is GTIN the same as UPC?
No. GTIN is the umbrella product identifier family. UPC is commonly associated with GTIN 12, and EAN is commonly associated with GTIN 13.
Does Amazon accept EAN codes?
Amazon may accept EAN codes depending on marketplace region, product category, brand, and listing requirements.
Can UPC codes be converted into EAN?
In some cases, yes. An EAN format may be created by adding a leading zero to a UPC code. However, marketplace acceptance depends on product category, marketplace rules, and product identifier requirements.
Do handmade products need barcodes?
Some handmade products may qualify for GTIN exemption depending on marketplace policy and approval requirements.
Final Thoughts
The original article’s core message still matters: marketplace product identification depends on clean product references and valid barcode data.
As businesses expand into Amazon, FNAC, Cdiscount, Mirakl marketplaces, Shopify, PrestaShop, and Magento ecosystems, barcode consistency becomes increasingly important.
For merchants managing larger catalogs, barcode data should be treated as part of product data quality, not just a technical field inside a product sheet.