Mistakes happen — wrong amount, wrong buyer, duplicate entry. LHDN allows cancellation of a validated e-Invoice, but only within a limited time window. Understanding this process (and its limits) matters more than most business owners expect.
Once an e-Invoice is validated by MyInvois, both the issuer and the buyer have a short window in which the issuer can cancel it (see our dedicated guide on the 72-hour cancellation rule). Within this window, cancellation is generally straightforward — no separate document is required, the e-Invoice is simply marked cancelled and no longer counts as valid.
If the window has closed, you can no longer simply cancel the e-Invoice. Instead, you correct it using a credit note, debit note, or refund note that references the original e-Invoice — these are themselves validated e-Invoice documents. See e-Invoice vs Traditional Invoice for how these document types differ from a simple invoice edit.
Within LHDN's permitted cancellation window, submit a cancellation request through the MyInvois Portal or via your software's API integration, with a reason for the cancellation.
You can no longer cancel it outright — use a credit note, debit note, or refund note referencing the original e-Invoice instead.
No — cancelled e-Invoices remain in the audit trail marked as cancelled; they are not deleted, which is important for compliance and transparency.
