Supported Paper Sizes
Dawg Prints machines only support standard American paper sizes, like Letter (8.5" x 11"), Legal (8.5" x 14"), and Tabloid (11" x 17"). (not available in all locations)
When printing a document with the native size of A4, for example, you will need to tell the printer to print in one of the three sizes above. Most print drivers also have the option to "fit to print" or "shrink to fit" which will scale your document to fit the standard sizes.
The above error will appear when you try to print an unsupported size.