when you go in yast / printer, you see the defined printers with model name and default queue.
But if you edit this printer queue, on the page named "configuration", the field for "PPD file" under the heading "current values" is displayed as "Unknown" even if the selected ppd file is used to print and works fine.
Also the values for "printer model", "filter settings" "restriction settings" and "state and banner settings" are empty even if values are set.
This is easily reproduced by creating a new queue with a randomly choosen printer model and/or ppd file, so it is not related to a specific printer definition (I tried both a network printer and parallel local port attached printer)