Sales reported wrongly

A business dealing in onions, an exempted item, has reported vastly different sales figures between their GSTR-3B and GSTR-1 filings for FY 2020-21. The user is seeking advice on whether to declare actual sales in GSTR-9 and understand the cause of these discrepancies. Professional advice suggests disclosing the correct amount in GSTR-9 and engaging a qualified professional to prevent future errors, even for exempted or nil-rated goods.