excess credit taken in gstr 3b

Sourav manik Banerjee (41 Points)

11 August 2018  
Due to Oversight We have Taken Excess  ITC in GSTR - 3B for MAR 18 and it is also already Reflected in Electronic Credit Ledger.

ques:- how to reverse it?

Is This Mistake is Punishable ???   OR  any Penalty / Interest will be Imposed on Us ???

Please give advice