Wrong Itc Claimed

Jui Tanna (28 Points)

04 May 2018  
One inter state purchase bill was recorded twice and its corresponding igst input credit is availed and utilised as well for payment of output tax liability of cgst and sgst
now in which head payment should be made? n how to show the same in gstr 3b
there is no purchase and sale transaction further as firm is going to close
Kindly Help