We have made an export of goods in 2018-19, for which IGST has got refunded into our bank account. Our problem is that one of our consultant has wrongly filed in 3.1(a) of GSTR-3B which should be in column of 3.1(b)(zero rated supplies) though GSTR-1 was filed correctly. Due to this technical error, our 7-8 invoices are not getting processed on ICEGATE portal. Please help us on this issue to resolve