https://www.taxtmi.com/forum/issue?id=121021 GSTR-1 invoice-number correction may be made by amending an erroneously reported duplicate invoice number, including by using an alphabetic suffix, to address a serial-number mismatch in later reporting. An alternative is to revise the invoice number and report a corresponding credit note through GSTR-1A before filing GSTR-3B. Where the recipient is registered, acceptance of the revised invoice and related credit note should be coordinated; amendment in the subsequent month's GSTR-1 with an addendum credit note is also mentioned. en-us Mon, 13 Jul 2026 17:50:40 +0530 Sun, 19 Jul 2026 12:01:29 +0530 TaxTMI RSS Generator https://www.taxtmi.com/forum/issue?id=121021 GSTR-1 invoice-number correction may be made by amending an erroneously reported duplicate invoice number, including by using an alphabetic suffix, to address a serial-number mismatch in later reporting. An alternative is to revise the invoice number and report a corresponding credit note through GSTR-1A before filing GSTR-3B. Where the recipient is registered, acceptance of the revised invoice and related credit note should be coordinated; amendment in the subsequent month's GSTR-1 with an addendum credit note is also mentioned. Discussion-Forum GST Mon, 13 Jul 2026 17:50:40 +0530 https://www.taxtmi.com/forum/issue?id=121021