There are a few things to consider when creating your own EAN codes.
We recommend using codes with the EAN-8 and EAN-13 standard. These have 8 and 13 digits respectively.
The first digit must be a 2, so that your own EAN codes can be distinguished from purchased ones. Otherwise you would have to register and pay for your EAN code.
The last digit is a check digit and can therefore not be determined by you.
The following link will take you to a website that calculates this check digit:
Enter your own code on the website, eg: 258763494932
Press "Calculate check digit", the page should now have added the check digit for you, in this case 8.
"2587634949328" is now a valid and compliant EAN-13 code that you can use with Paymash. You can stick it on your product with a label printer, for example.