IGST claimed Wrongly mistakenly

vikram (nothing) (22 Points)

03 July 2020  
Sir

IGST has been claimed mistakenly in 3B which is actually Zero.
But mistakenly claimed.
Now I want pay through DRC-03 but to which state shall I pay that IGST because it was just mistakenly claimed. while paying IGST the form asks place of supply of IGST, now am registered in Karnataka but how do I pay IGST because I don't know which state should it be paid,as it was just mistakenly taken in 3B for FY 2017-18 and not paid yet as I didn't got correct picture of how to pay the same??