Sometimes Paper Size of Trays of a 4350 printer are getting randomly changed from A4 to Custom , which means when users next print to it , the printer asks to confirm the Tray for printing ( not automatic)

This is caused when users refill the printer tray with paper , after shutting the tray it asks them to confirm the paper type. If they click the Green Button ( blue arrow ) it will reset this to Custom. They need to be pressing the Back button to leave this to A4