Show your list of Printers in SambaPOS …
The Printer needs to match on of your configured Printers.
Also, this will not print anything if you have not created a document or made a payment recently, because it needs to store the Doc Id when the Document is created.
This is not the perfect solution obviously, because it only stores a single Doc Id - the last one that was created.
There are better ways to go about it this that could even apply to certain Accounts, however…
Rather than making a Tutorial for that, most of what you need is already in the Account Statement Tutorial. If you want to implement that Tutorial, I will be happy to extend it to be able to print single Docs for any Account. That is what I originally suggested for this as the best solution.