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A junior accountant spots an error on an e-invoice after the IRN is generated and does not know whether to cancel, edit or issue a note.
IRP cancellation is full, within 24 hours and only with no active e-way bill. Editing is not possible. After 24 hours, a credit note reverses the invoice and a new invoice is raised if needed.
A same-day review of every new IRN, an e-way bill check before cancelling, and a register of cancellations and credit notes linked to the original IRN.
Errors fixed by the right route, GSTR-1 and the buyer's GSTR-2B correct, and every cancellation or note traceable to its IRN.
You cannot edit an e-invoice once the IRN is generated. You can cancel it in full within 24 hours, and only if no e-way bill is active against it. After 24 hours, you fix the mistake with a credit note (to reduce or reverse) or a debit note (to increase), not by changing the original.
That 24-hour window is why a same-day check of new e-invoices saves so much trouble.
Which route fits which error?
| Error | Found within 24 hours | Found after 24 hours |
|---|---|---|
| Wrong buyer GSTIN | Cancel IRN, reissue to the right GSTIN | Credit note for the full value, new invoice to the right GSTIN |
| Value too high | Cancel and reissue | Credit note for the excess |
| Value too low | Cancel and reissue | Debit note for the shortfall |
| Wrong item or HSN | Cancel and reissue | Credit note and new invoice |
| Duplicate invoice raised | Cancel the duplicate | Credit note against the duplicate |
| Goods returned by buyer | Not a cancellation case | Credit note |
Two practical rules:
- If an e-way bill was generated, cancel the e-way bill first. The IRP will not cancel an IRN with an active e-way bill.
- The reissued invoice needs a new number. The IRP will not give a second IRN to the same document number, and your invoice series should show the old one as cancelled.
What happens to GSTR-1 and the buyer’s ITC when an IRN is cancelled?
E-invoice data flows from the IRP into your GSTR-1. A cancelled IRN is removed from that flow, so the invoice never reaches the buyer’s GSTR-2B and the buyer gets no input tax credit on it. If you had already filed GSTR-1 with the invoice in it, you correct the return through the credit note route instead.
Can I edit an e-invoice after the IRN is generated?
No editing is possible on the IRP. Changing figures in your own books without a cancellation or a note leaves your ledger, your GSTR-1 and the IRP record telling three different stories. That mismatch is exactly what a buyer or an auditor will find.
Worked example: wrong buyer GSTIN
An electrical supplier in Ahmedabad raises invoice INV/26/0377 for ₹1,50,000 plus GST at 18 percent (₹27,000), a total of ₹1,77,000, at 4 pm on 8 October. The IRN is generated, but the buyer’s GSTIN belongs to a sister company.
Case A: found next morning at 10 am (18 hours later). No e-way bill has been generated yet. The accountant cancels the IRN, notes 0377 as cancelled and issues INV/26/0378 for ₹1,77,000 to the right GSTIN. GSTR-1 for October shows only 0378.
Case B: found on day three. Cancellation is no longer possible. The accountant issues a credit note for ₹1,77,000 against 0377 to the wrong GSTIN, which also needs an IRN, and a new invoice 0391 for ₹1,77,000 to the correct GSTIN.
| Record | Case A | Case B |
|---|---|---|
| Documents issued | 0377 cancelled, 0378 issued | 0377, credit note, 0391 |
| Net taxable value | ₹1,50,000 | ₹1,50,000 − ₹1,50,000 + ₹1,50,000 = ₹1,50,000 |
| Net GST | ₹27,000 | ₹27,000 |
Both cases end at the same tax, but Case B creates three documents and a credit note that the wrong buyer must also accept.
Key rules to remember
- E-invoicing applies above ₹5 crore of aggregate turnover (since 1 August 2023); at ₹10 crore or more, each document must reach the IRP within 30 days (since 1 April 2025).
- Credit notes are issued under Section 34 of the CGST Act and must be declared by 30 November following the financial year, or the annual return date if earlier.
- Rule 46 governs the replacement invoice’s particulars, including the 16-character number limit.
What to read next
- Next in this series: E-invoice IRN reconciliation in India
- Tracking notes: GST credit note reconciliation
- Back to basics: What is an e-invoice under GST?
- GST reconciliation software: GST outward reconciliation (GSTR-1 and GSTR-3B) leads the TransactIG GST roadmap.