revised return under sales tax in tnvat, VAT + CST

[Ramakrishnan Seshadri]

Dear Sir,

Could any body guide us or tell us how to prepare the revised return under sales tax under tnvat act.

One small example.

We have filed the original return for the sales made to the customer say as ₹ 100/- by paying vat @ 5% as ₹ 5/-.

Now the customer pays us only ₹ 90/- and balance ₹ 10/- he is not paying and says as cost reduction. He has taken input credit for ₹ 5/-.

This will not match with the sales figure as per books. Hence we need to file a revised return.

How to file it.

Thanks

S.Ramakrishnan.