EAN Barcodes

European Article Numbering: (EAN-13, EAN-8, EAN + 5, EAN + 2, UCC-E, gencode, GTIN) is a digital barcode that can be read omni-directionally.
It is used on all goods whose code is read by a scanner at the cash desks of retail stores.


The UPC code was invented in the 1970s by George J. Laurer, an engineer at IBM and was adopted in May 1973 by the Uniform Grocery Product Code Council (an organization of industrialists and distribution companies in the United States).

George J. Laurer, after graduating from the University of Maryland in 1951, worked at IBM.
In 1969 he was entrusted, by the Uniform Grocery Product Code Council, with the enormous task of creating a code and its identification symbol for all the products distributed in stores.
Its Universal Product Code (UPC) solution radically changed the world of distribution.
He then improved the code by adding a 13th character to it, thus creating the EAN code.

Laurer retired in 1987. He holds 25 patents and is registered on the honor roll of the A. James Clark University School of Engineering in Maryland in the United States (near Washington D.C.).

EAN and UPC:
The EAN-13 code used worldwide and the UPC-A code (Universal Product Code) used in the USA are almost identical.
The only difference being that on a UPC only 12 digits appear instead of 13 digits on the EAN.
A UPC is an EAN whose first 2 characters to the left of the code are 0 (zero).
In the OCR representation (numbers written in clear under the code) of a UPC, only one of these 0 (zero) appears.
Since 2004 the EAN code has also been used by Swiss insurers and doctors with the Swiss flag as part of Tarmed.
For more information see EAN and Tarmed.

Minimum dimension of an EAN 13 symbol
The GS1 regulatory body defines the minimum size of an EAN 13 symbol at 80% of its nominal size, i.e. a minimum width of 29.83 mm for a height of 20.73 mm.
EAN 8:
For the composition of the EAN 8 code, see here
Minimum dimension of an EAN 8 symbol
The GS1 regulatory body defines the minimum size of an EAN 8 symbol at 80% of its nominal size, i.e. a minimum width of 21.38 mm for a height of 17.05 mm.
The EAN Code includes the following information:
bullet The EAN Prefix:
2 or 3 digits, it is the code of the country which issued the participant number.
For Switzerland this code is 76.
For other countries see our EAN Prefixes page.
The prefixes 977, 978 and 979 indicate that it is a book or publication with an ISBN or ISSN number
– The Participant Number:
5 to 7 digits, it is issued by the EAN organization of the country concerned.
In Switzerland this organization is:
GS1 – EAN (Switzerland) – CH 3000 Berne – http://www.gs1.ch/

If you are looking for a participant in EAN we advise you to visit this page:
Search the EAN database.
– The Article Number: of the producer of the object thus coded on 3 to 5 digits.
– The Check Digit: or Check Digit is calculated according to the first 7 (EAN-8) or 12 (EAN-13) digits that make up the code.

Merge two Amazon accounts

Question: How do I merge 2 amazon seller accounts? I have one selling a few products and my partner also has one selling a few products. We plan to become a ltd company soon and would like to merge the accounts without losing any sales ranks or reviews.

Answer: You need permission from the verification team. You will need the limited company in place. They will normally convert one to a limited company then add the other one, once that is done. But the rules are dependent on the accounts and Amazon, so there is no set rule in place on how they do it, so you need them to explain it to you.seller-verification-enquiry@amazon.co.uk.

Answer: Look into the Amazon Web Marketplace Web Service (MWS) With your MWS API key you can then connect your amazon accounts with a third party software to manage both of your both accounts from 1 login. Shipwire is one vendor but there are many more out there which offer the full end to end service. Check your seller central pages, there should be a MWS page somewhere Ive seen it previously.

Answer: Keep them separate, you can sell on both and keep under vat untill your doing well the vat register. And you have on to fall back on if one gets suspended

Amazon brand not renewal/reapply?

Have you been told instructions that you have to re apply for Amazon brand registry. Did you have a brand registered years ago and Amazon have had all your trademarks certifications and numbers for years?

Your existing brand pages are visible but can’t access them apart from USA?

Seems very odd? Has this happened?

Answer: I’m assuming you signed up for Brand Registry Pre Brand Registry 2.0 – so yes, you had to “sign up” again to Brand Registry 2.0 even if you were registered in the original Brand Registry…

And you need to sign up for a BR 2.0 account in each Amazon marketplace you sell in, and then provide authorisation from the main BR 2.0 account (where you first got brand registry) to all of the “satellite” BR accounts.

It’s legwork to setup – but useful in the long run that stuff is separated out by marketplace

Do I really need to provide a UPC / EAN for each product?

Amazon requires you to provide a UPC / EAN only when listing new products, which do not exist on the Amazon website yet. In this case, you need to enter a valid UPC or EAN for each product and variation in theProduct ID field you’ll find on the edit product page. Then you can apply a listing profile with a category specific feed template to fill in all the information required for your category of products.

For variable products, you need to enter a Product ID both for the “parent” product – the same way as you do with non-variable products – and for each variation as well. To add product IDs for a huge number of products in bulk, you should consider importing them from a CSV file.

Adding UPCs from CSV / Excel

To populate the Product ID field via  CSV import, you just need to make your CSV importer create a post meta field with the name of _amazon_product_id. The UPC you store in this field will work exactly the same as if you had entered it manually when editing the product.

Using ASINs instead of UPCs

If you want to list a product which does already exist on Amazon though, you only need to tell  the ASIN for this existing product – see  Listing existing products on Amazon for more details. Since you don’t have to provide any category specific details, you do not need a listing profile at all – or you can use the generic Listing Loader feed template, which will work for all kinds of products and is much simpler to set up.

What are UPCs, EANs, GTINs, etc.?

All of these are globally unique IDs which identify a particular product and package size. While EANs are used in Europe, UPCs are used in the US and other countries – and ISBNs are used for books. Amazon does support the following Product IDs:

  • ISBN (International Standard Book Number): 10 digits or 13 digits
  • UPC (Universal Product Code): 12 digits
  • EAN (European Article Number): 13 digits
  • JAN (Japanese Article Number): 13 digits
  • GTIN-14 (Global Trade Item Number): 14 digits

For more information see  Locating Product Identifiers on Amazon and Global Trade Item Number on Wikipedia.

I have my brand registered with Amazon and are allowed to leave the UPC / EAN empty when listing new products – but I still get errors when submitting a feed.

If you have are a registered brand with Amazon and therefore are excluded from the usual UPC requirement to list new products, there are still a couple of things you should know:

Since the “Product ID” field in your feed template is officially “Required”, you can not leave this field empty – or you won’t be able to save the profile. We suggest you leave the default [amazon_product_id] shortcode here – that will pull the value from the “Product ID” field on the edit product page, which you can leave empty.

Even without the requirement to provide a valid UPC or EAN when listing new products, you still need to provide a  unique “key identifier” – usually labeled “Model Number” or “Style Number” in your profile – or you might run into problems submitting you feed, especially with variations. If you don’t have any other unique attribute in WooCommerce, we suggest you simply use your SKU as model number.

The Brand Registry account settings option


Once you have your brand registered with Amazon, please visit Amazon » Accounts » Settings, click on Edit to edit your account – and you’ll find the Brand Registry option. Enable that option to let WP-Lister know that you don’t need UPCs or EANs. This will  suppress some warning messages that you might see otherwise – which only apply to sellers which are required to provide UPCs or EANs.

Adding UCP EAN to Amazon Products

Adding UPCs, EANs, and ISBNs for Your Products

Most categories require sellers to use a product identifier to create new product pages and offer listings on the Amazon.com website. The most common identifier used by sellers is a UPC.

If you don’t provide a UPC, EAN, or ISBN, you will generally receive an error message. When this occurs, you will need to add the product’s identifier in order to create a new product detail page in the Amazon.com catalog or complete your inventory offering. (If you don’t have a UPC, EAN, or ISBN for your product, buy one with us)

The UPC field is supported in the Add a Product tool and in Inventory File templates.

Add a Product

The Add a Product tool will allow you to create new product detail pages and offerings one at a time. If you search for a product and find it in our catalog, the UPC, EAN, or ISBN will be automatically entered for you and you can continue to create your offering. If you create a new product detail page, you can enter the UPC or EAN on the “Add This Product to Our Catalog” page after completing the product classification step.

Inventory File Feeds

An Inventory File template allows you to use a pre-formatted spreadsheet to enter data for multiple products and then upload the completed file to Amazon. We will either match your data to existing products in our catalog or create a new product page if no match is found.

When preparing an Inventory File Template, enter data into both of these fields:

product-id: The product’s unique identifier, which is the actual UPC (12-digit number), EAN (13-digit number), or ISBN (10-digit number)
product-id-type: The type of unique identifier entered in the product-id field, either UPC, EAN, or ISBN