I am trying to file online er-1 of March-2015. from 1st March 2015 Rate of Excise duty is 12.5% and education cess is removed. but I when I tried to upload er-1 I have found the error message about rate of duty What should I do for it ? I have paid duty by two challans. Online return utility allow me only one challan details Where should I mention Second challan details.? I have also cenvat credit balance of both cess can I utilized it against payment under 12.5% rate.