This error occurs when the paper size in the tray is not supported for automatic 2-sided (duplex) printing. Only A4, Letter, Legal and Folio size paper are available by automatic 2-sided (duplex) printing for your Brother machine. Load A4, Letter, Legal or Folio size paper in the tray and try printing again.

*: Letter, Legal and Folio for USA/ Canada/ Latin America, and A4 for others.