Place of supply mentioned wrong in gstr-1


(Guest)

My client is registered in Gujarat.

In GSTR-3B I have properly mentioned IGST.

BUT in GSTR-1, in B2B, I have mistakenly mentioned "Place of Supply- Gujarat" instead of tamilnadu in GSTR-1, and submitted the same, Resulting in CGST and SGST instead of IGST.

How can I rectify the same???

Please provide solution.