Supplementary invoice

Mahesh Balkrishna Chavan (Asst Manager Excise) (48 Points)

21 July 2012  
Dear sir,
 
I have query about supplementary Invoice  I want to issue supp invoice for supply of material in the 
month of jan-12. Can I issue Invoice as per present rate of duty ie 12%. or it  can be previous rate of duty ie 10%.  Please guide us in this regards. 
 
Regards
 
Mahesh B Chavan