A Document Template is a PDF which is used like a canvas for Smart Documents to print information on. It determines the appearance of a printed Smart Document. Any PDF can be uploaded as template, but usually, a blank page with header and footer containing e.g. a company logo is used.
Every Document Template defines its page margins, where information can be printed on, and where elements like QR- and human readable codes should be placed.
Since the appearance of a document can vary depending on the language, each template can be uploaded for every language available in the configuration.