Yes, your invoice is available under My Account > Orders page where you can download your invoice, review your orders, and more. If you have specific needs for your country, feel free to modify the invoice to your specific needs. …
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Resources for barcodes, UPC/EAN codes, Amazon, and more.
This SKU has an inconsistent product classification with the ASIN.
If you’re listing on Amazon, you may come across this error: This SKU has an inconsistent product classification with the ASIN. Please submit a feed to update this SKU to match the ASIN product classification. Receiving a message like this …
This SKU has an inconsistent product classification with the ASIN. Read More »
UPC Databases & UPC Lookup
Contrary to what many believe in 2026, there is still no single, government-run “Global UPC Database.” While GS1 is the organization that rents out company prefixes, they do not maintain a master list of product data (pricing, images, descriptions) associated …
Online Barcode Generators
A barcode serves as a graphic image designed to encode data, much like how different languages such as French and English use the Roman character set for letters. These barcodes have seamlessly integrated into various aspects of modern life and …
The SKU data provided is different from what’s already in the Amazon catalog
When you’re creating a listing, you may come across this error (Amazon Error 8541): This error is rare but happens when you’re listing a new product but the UPC(s) you’re using is already being used on Amazon. This can happen …
The SKU data provided is different from what’s already in the Amazon catalog Read More »
What is the GS1?
The GS1 (Global Standards One) is a global organization that develops and maintains standards for various industries, including retail, healthcare, and logistics. The organization was founded in 1977 to create a common language and standards for the identification, communication, and …
Amazon changed their policy, do your codes still work?
Yes, our codes still work, just as they have for 15+ years. There are specific cases where we would advise purchasing a prefix from the GS1, but in the vast majority of cases this isn’t necessary or required. Some people …
Amazon changed their policy, do your codes still work? Read More »
Do I need a separate UPC Codes for every product?
Yes, you need a different UPC barcode for each UNIQUE product that you sell. For example, let’s imagine you have a t-shirt company and you want to sell 3 different color shirts of the same size, you’ll need 3 UPC …
Do I need a separate UPC Codes for every product? Read More »
I want to sell my book; do I need a UPC, EAN or ISBN number?
If you’re selling your book through a retail outlet, the retailer will generally require that you obtain an ISBN. The ISBN is a 13 digit number that properly identifies the book title and the publisher’s contact information. We recommend that …
I want to sell my book; do I need a UPC, EAN or ISBN number? Read More »
Do I have to have a UPC code in order to sell my products online?
In the vast majority of cases, a UPC barcode is required in order for vendors to identify products and prevent duplicates in their system. It is also normal practice is have a unique UPC for each unique product you sell. …
Do I have to have a UPC code in order to sell my products online? Read More »