URL Printer Error

Hi everyone,

I’m trying to figure out how URL printer works, and wondering if someone can explain it to me, here is what I’ve done so far:

I have a working button on Payments screen (ref. screenshot 1).

I have tested the Demo printer (printing to notepad) using the same button, and it works. For the setup (ref. screenshot 2).

Now I’m trying to setup the URL printer (ref, screenshot 3), but it is throwing an error (ref. screenshot 4). Please note that the only thing I’m changing between the setups is the type of printer, you can see all the differences in screenshots 2 and 3.

Can someone clarify what is an error, and what are the possible ways of solving it?

Thank you,
Maksim

screenshot-4

Without knowing what that site is expecting to receive it’s hard to say.
An API typically requires auth headers and other bits which I think may be a challenge through url printer.
Without more info it’s hard to say for sure without more experience with url printer where than error stems from.