Wrong report of liability, claiming back

Mohan Kale (376 Points)

24 June 2023  
I have a query regarding reversing or claiming refund of GST liability wrongly reported. The facts are as under:
1. Out of total 10 invoices in May 2023, 4 tax invoices were without GST for the service actually covered under RCM.
2. While filing GSTR-1 for May 2023, the said 4 invoices were wrongly reported with tax as though under FCM (along with other 6 tax invoices).
3. Now while filing GSTR-3B for May 2023 this wrongly reported liability for 4 invoices will be set off against available ITC.

Query is whether the utilized ITC will get reversed and restored if while filing GSTR-1 amendment is reported with zero tax (RCM) on the said 4 invoices or credit note requires to be raised? Or what is the correct procedure to restore this ITC ?