GSTR 1 QUERY 2018 19

This discussion addresses a common GSTR 1 query for the 2018-19 period concerning duplicate invoice submissions. The user submitted the same invoice in different quarters, but the recipient only accounted for it once, leading to a mismatch notice from the department between GSTR 1 and 3B. The advice given suggests that invoices with the same serial number may not be accepted and that invoice numbers must be unique.