Reversal of input credit excess amount

Dear Sir,

We have input on madhya pradesh  state for the month of March 2018 is as follows

sgst 40000/-

cgst 40000/-

but i have wrongly mentioned input in GSTR 3B as follows

SGST 40000

CGST 40000

IGST 80000( over sight SGST+CGST amount)

now this amount adjustable reversal in April GSTR -3B ?

We habe 350000/- above input available in credit ledger

please suggest at the earliest for filing of April return