Since UBS currently does not have a direct cancel option, please ensure you carefully review and approve the invoice before transmitting it. You have a maximum of 3 days from the invoice issue date to transmit it. If you exceed this timeframe, adjust the document date or consolidate the invoice, as these actions are still permissible. When an invoice is validated in the LHDN MyTax portal, it is considered officially accepted. However, if the client rejects it:
Within 3 Days of Validation:
You can cancel the validated invoice directly from the MyTax portal within this 3-day window.
If a validated invoice is cancelled within 72 hours, create a CN in UBS to write it off (no need to transmit the CN to MyTaxPortal). Then, issue and transmit a new invoice.
After 3 Days of Validation:
Cancellation is no longer possible on the MyTax portal.
You will need to issue a Credit Note (CN) to void the original invoice and then create a new invoice for submission.