I mistakenly filed B2B as B2C.
Later I have amended (Dec 2020 invoice) B2C to B2B but forgot to reduce the invoice amount from table 10.
Also I didn't mention next month's(Jan) invoice in GSTR1B. How can I rectify this?
Another query is that I failed to file GST for April 2021 but then later I paid it voluntary GST using DRC-03 in May 2021 but till now it is not processed by the Tax officer. Please help me in this regard.