Old Excise Duty Charged

Dear all,

I have an issue wherein a customer was charged by the company with 10% BED instead of 12%. The Sales order date was 10/03/2012. The billing was done on 30/03/2012. Excise duty had changed from 10% to 12%. Before creating a billing document, they forgot to update the sales order with the new BED. Monthly utilization has also been done now with 10%. Now, they want to charge the customer the additional 12%.

Actually, a JV has been passed, but while doing monthly utilization in J2IUN, this entry is not reflecting.

Kindly anybody suggest how this can be done.

Thanks and Regards

Adithya