C form related

sreelakshmi bad a a hall srina (B.Com) (35 Points)

15 May 2016  

it has past 2 years filing vat return with  12,73,000 as the cst purchases, but in actual we have a further purchases of nearly 2,50,000 for the period .  As it is passed 6 months we cannot file revised return stating the other cst purchases, but we have to issue the c form to the party,

what  or how can we solve the issue can any of the experts give us the correct procedure