you'd need a custom script, but it's certainly doable

Thanks for confirming. For now, I don't know how to print a Barcode using Suitescript, I will search but if you have an idea, let me know. Thanks a lot

I'm not sure the question makes sense on its own. What I mean is that you print a "document" (eg PDF). So the question is how to get a barcode onto a PDF. And that's pretty easy ... you use the same technique that is used for the advanced templates. You create a properly formatted HTML file, then convert that to a PDF using the NetSuite libraries.