We are based in Allahabad. We have sold scrap material in Non-2011 and April-2012 to party based on Nagpur (Maharastra) and invoiced Sales with CST 5%. The CST collected is also deposited with sales tax authority and submitted the VAT return accordingly. The VAT Return for the financial year 2011-12 has already been submitted.
Now, the party has submitted Form-C and claim the refund of differentail CST 3%.
Is it possible to refund differentail CST3% to party for the sales invoiced in November-2011 and April-2012 and revise the VAT return of the respective period? Can this be made without revising the original 'TAX INVOICE' issued to the party at the time of sale?