What is the mandatory order of cancellation when both an E-Way Bill and IRN exist?

You MUST cancel the E-Way Bill first on the portal or in Tally Prime. Only after the E-Way Bill is successfully cancelled can you cancel the linked IRN.

What happens if 24 hours have passed since IRN generation?

The government IRP portal disables direct IRN cancellation after 24 hours. To correct or void the transaction, you must issue a Credit Note under Section 34 of the CGST Act.

What are the 4 official reason codes for IRN / E-Way Bill cancellation?

Code 1: Duplicate, Code 2: Data Entry Mistake, Code 3: Order Cancelled, Code 4: Others (requires detailed remark).

How does TrulyInvoice prevent invoice data entry errors that cause cancellations?

TrulyInvoice AI parses supplier PDFs, auto-extracts line items, HSN codes, and tax totals, posting verified F9 Purchase Vouchers directly into Tally Prime via Port 9000 local sync in 15 seconds.

How to Cancel E-Way Bill & IRN in Tally Prime (2026 24-Hour SOP)

Quick Summary: How Do You Cancel an E-Way Bill & IRN in Tally Prime?

Both E-Way Bill and IRN must be cancelled within 24 hours of generation. Open Tally Prime > Display > GST Reports > e-Way Bill. Press F10 (Cancel E-Way Bill) first. Once confirmed, go to e-Invoice report, select voucher, press F10 (Cancel IRN), select Reason Code (Duplicate, Data Entry Error, Order Cancelled), and send to IRP. If > 24 hours, issue a Credit Note.

24-Hour Deadline: Statutory cutoff for direct IRP/EWB portal cancellation.
Order of Execution: Mandatory: E-Way Bill MUST be cancelled BEFORE IRN.
Reason Codes: 1-Duplicate, 2-Data Entry Mistake, 3-Order Cancelled, 4-Others.
Post-24h Fallback: Issue GST Credit Note under Section 34 to void transaction.

1. The 24-Hour Statutory Cancellation Protocol

The GST portal enforces strict rules on cancelling IRNs and E-Way Bills:

Condition	Within 24 Hours of Generation	After 24 Hours of Generation
Portal Availability	Available (Direct IRP API Cancel)	Disabled permanently on IRP
Action Required	Cancel E-Way Bill first, then cancel IRN	Issue GST Credit Note in Tally Prime
Reuse Invoice Number	Prohibited (Invoice No. blocked)	N/A (Credit Note references orig. bill)

2. Government Cancellation Reason Codes in Tally Prime

Code 1 — Duplicate: Used when the invoice was accidentally entered or uploaded twice.
Code 2 — Data Entry Mistake: Used for incorrect buyer GSTIN, tax rate, or amount errors.
Code 3 — Order Cancelled: Used when the customer cancels the purchase order prior to dispatch.
Code 4 — Others: Used for any other valid reason (requires specific textual remark).

Eliminate Data Entry Errors in Tally Purchase Bills

Ensure 100% accurate supplier invoice entries from day one.

Data entry mistakes in purchase vouchers (typing errors in invoice numbers or date formats) lead to mismatches that require complex cancellations or credit notes.

TrulyInvoice AI Automation: Upload supplier PDF bills or WhatsApp scans. AI auto-extracts line items and posts F9 Purchase Vouchers directly to Tally Prime in 15 seconds via Port 9000 local sync.