It's about Croatian characters: ŠšĐđČčĆ掞
These are some of the characters I was able to map in ASCII:
Char code = Cro letter = How I see them in VS editor
196+144 = Đ = Ä
197+160 = Š = Å
196+134 = à = Ć
196+140 = Č = ÄŒ
Those characters (codes) my bank knows how to read and expects them to be in those codes. Is there a method or encoding that can do this automatically or is it a standard of sorts in my Country or EU...? I doubt I should know and hardcode in my program those codes in order to be able to transport those characters in ASCII barcode PDF417. I can't find information about it.
Ok, I've found it. It is a HUB3 standard. https://www.hub.hr/sites/default/files/inline-files/2dbc_0.pdf
UTF-8 kodovi za Hrvatske dijakritičke znakove