Wrong E-Invoice Generated? How to Correct or Cancel an IRN Under GST

What has changed

An e-invoice cannot be edited on the Invoice Registration Portal after its Invoice Reference Number (IRN) has been generated. If a supplier discovers an error, the available correction route depends largely on whether the 24-hour IRN cancellation window is still open.

Can an e-invoice be amended on the IRP?

No. The official IRP FAQ states that details furnished to the IRP cannot be amended. An e-invoice can instead be cancelled within 24 hours of generation, subject to the portal conditions.

What can be done within 24 hours?

If the mistake is identified within 24 hours, the supplier can cancel the IRN. Where an e-way bill has already been generated and remains active, the IRP guidance states that the e-way bill must first be cancelled before the IRN can be cancelled. Both cancellations must still fall within the applicable 24-hour window for IRN cancellation.

A cancelled IRN cannot simply be reused for another invoice. The IRP FAQ explains that an IRN is derived from key invoice identifiers including the supplier GSTIN, document number, document type and financial year, and the cancelled IRN remains traceable.

What if the 24-hour cancellation window has expired?

The IRP does not permit cancellation after 24 hours. The official FAQ states that where an invoice needs to be cancelled after that period, the taxpayer must make the necessary correction through the GST return process; depending on the facts, this can involve deleting or correcting the relevant details in GSTR-1 or issuing an appropriate credit note.

The correct tax treatment should follow the underlying transaction. A credit note should not be created merely as a technical workaround without checking whether the statutory conditions and commercial facts support it.

Wrong GSTIN, HSN or other invoice data

The same principle applies to common data errors. The IRP FAQ specifically says that an e-invoice cannot be amended on the portal. For a wrong customer GSTIN, cancellation within 24 hours is the immediate portal remedy; once that period has lapsed, the supplier must use the appropriate downstream GST correction mechanism. For an incorrect HSN, the portal likewise does not provide an amendment function.

Practical correction workflow

- Identify the error immediately: determine whether it affects GSTIN, document number, tax values, HSN, place of supply or another material field.

- Check IRN age: establish whether 24 hours have elapsed from IRN generation.

- Check the e-way bill: if an active e-way bill exists and IRN cancellation is still possible, cancel the e-way bill first where required by the portal workflow.

- Cancel within the window: cancel the erroneous IRN if the portal still permits it, then generate the correct document in accordance with the applicable invoicing rules.

- If the window has closed: do not attempt to amend the IRP record. Review the appropriate GSTR-1 correction or credit-note treatment based on the actual transaction.

- Keep an audit trail: retain the original IRN details, cancellation evidence, corrected document and reconciliation support.

Why accounting teams should build a pre-IRN check

Because the IRP does not offer an amendment facility, prevention is materially easier than correction. ERP and billing teams should validate recipient GSTIN, document number and date, place of supply, HSN, taxable value and tax breakup before sending invoice data to the IRP.

A maker-checker control is particularly useful for unusual invoices, high-value transactions and first-time customers. Automated GSTIN-master validation and duplicate-document checks can also reduce errors before IRN generation.

Key takeaway

An e-invoice cannot be amended on the IRP. If an error is found within 24 hours, the IRN can generally be cancelled subject to portal conditions, including cancellation of an active e-way bill first where applicable. After 24 hours, IRN cancellation is unavailable and the supplier must correct the GST reporting trail through the appropriate return or credit-note mechanism based on the facts.