Excise duty captured wrongly

Hi All,

Recent changes in the union budget basic excise duty has been change 10 % to 12 %. In this connection we have already change in excise rate master ( J1ID ) and effective date given 17.03.2012.

We have to take the cenvat credit on the basis of GR. while taking the cenvat credit excise duty has captured @ 12 % instead of excise duty 10 %. For the period 01.03.2012 to 16.03.2012.

please help to correct

regards,

nishith