07 September 2010
You can rectify your mistake by reversal of Cenvat to the extent earlier taken by u and no need to pay through PLA. However, check up whether at any time the balance in cenvat gone below the amt of cedit wrongly taken.
In any case, u are required to pay the Interest @ 13% p.a. for the period from the date the credit is taken to the reversal. This Interest is necessarily to be paid through TR- 6 challan.