GSTR-1 WRONGLY FILED DEC 2022

A user has mistakenly filed the GSTR-1 for Firm-A using the sales data belonging to Firm-B. Both firms have distinct client bases, making this error significant. The suggested solution involves issuing credit notes for all sales invoices that were incorrectly reported, ensuring the credit note date matches the original invoice date. Subsequently, all correct sales invoices should be reported in the next GSTR-1 filing.