Incorrect 3B filed

3B filed for Feb18- Liabiity shown CGST 97621/- SGST 97621/- IGST 196238/-
PAID thru cash SGST 52053/- CGST 52053/- IGST 196238/-
ADJT agst ITC credit total 91134/-

Actual 3B... Liability CGST 70170/-
SGST 70170/- IGST 251138/-

HOW to rectify it?

GSTR1 filed details are correct as per actual...mistake done in 3B.
and in Sep 18 no liability and 3B not filed.