As you are probably aware at this point Google Shopping/Merchant Centre is going to start enforcing GTIN/EAN/UPC numbers from 16th of May 2016. If you are not sure what does it mean we hope you will find some answers below.
So GTIN is a fancy name for an umbrella like concept accommodating and normalising various Universal Number notations such as: ISBN (Books), UPC (USA version of a barcode), EAN (European Version of a barcode) and more...
Basically GTIN is a 14 digits number, it can be an EAN number with pre-appended 0 so it becomes 14 digits long, or it can be an UPC number with two leading 00s in front.
From 16th of May Google will start enforcing GTIN numbers for all branded items, by branded items they mean items with brand which...Read More