- Support forum for the WooCommerce EAN Barcode Generator: UPC, ISBN & GTIN Inventory.
- This topic has 12 replies, 2 voices, and was last updated 3 years, 2 months ago by
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Hi again! The last days without changing any option into the plugin, every time I create a new variable product, the EAN number that is generating automatically is the same for every variable. This wasn’t happening before. Also, I just saw your recent update and perform it but the problem remains.
Hi,
Could you please let me know if you’ve set anything for the “Seed prefix (optional)” option in “WooCommerce > Settings > EAN > Tools > Product Tools > Generate”?
I’ve just re-tested it on my server, but, unfortunately, wasn’t able to reproduce the issue – each variation has a different EAN here. Would it be possible to log in to your site and check what’s going on (my email is [email protected])? And if sharing an account is not an option, could you please send me the screenshot of your settings in “WooCommerce > Settings > EAN > Tools”? Or, alternatively, you can export and send me the file of all plugin settings via “WooCommerce > Settings > EAN > Advanced > Export/Import Plugin Settings”.
Ok, now I understand what’s happening. You are generating EAN-8 codes, and EAN-8 consists of a 3-digit country prefix, 4-digit “seed” (i.e. product id), and the last digit is a checksum digit. Now, as you’ve crossed 10000 product IDs recently, your EANs ran out of “free space” (as your product ID has 5 digits now, not 4 as we need it in the EAN-8 case). Now regarding the solution – let me think about it for a bit, but I’m sure I’ll come up with something. We have two options basically – either use a 2-digit country prefix or modify the “seed” part somehow (the last digit – a checksum – is the one we can’t customize, as otherwise, we won’t get a valid EAN-8 code).
So, about the solution. What do think? Is it easier to use a country prefix such as GR before the digits? Or someday it will run out of codes again? Thank you
I’ve just installed a new plugin version (v3.2.1-dev) on your site. There I’ve added a new option – “Country prefix length” (it’s in “WooCommerce > Settings > EAN > Tools > Product Tools > Generate”). We can now set it to
2(I’ve already done this on your site) – this should solve the issue. Please note that this will work only for the EAN-8 type – other types will always use3. Please give it a try and let me know what you think.One note though – we will get the same problem when you will reach 100000 products. The most obvious solution to this is to use EAN-13 instead of EAN-8. Even though theoretically there is a limit of products in EAN-13 as well, in reality, there is no way any site will have so many products.
And finally regarding your suggestion – “… country prefix such as GR before the digits…” – unfortunately, it’s not possible, as EAN codes must have digits only, i.e. no letters.
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