Introduction
Understand how to submit credit notes, including refund notes, to the LHDN MyInvois portal. This guide ensures refunds and corrections are managed effectively using credit notes.

Open the invoice you want to Credit Note, click on the 3-dot menu icon in the toolbar above an invoice with a valid UUID.
From the drop down select "Create Credit Note".
Confirm that this is the Invoice you will create a Credit Note on, then click the "Ok" button.
Upon the Credit Note generation, ensure all details are correct, then click the "Save" button.
Next, record the Credit Note in the MyInvois portal by clicking the "Push to MyInvois" button.
On the pop-up select the "Proceed" button and wait for it the "E-invoice success" notice, then close the pop-up.
From the "Credit Notes" page, found in the left navigation menu under "Sales", click the "+" symbol or "new" to create new Credit Note.
Upon the Credit Note generation, ensure all details are correct, then click the "Save" button.

Next, record the Credit Note in the MyInvois portal by clicking the "Push to MyInvois" button.
On the pop-up select the "Proceed" button and wait for it the "E-invoice success" notice, then close the pop-up.
Next, to refund the credit note first expand the "Credits Applied" section of an invoice, and delete the Credit Note by clicking the trash can / delete icon.
Then click the "Ok" button on the confirmation pop-up.
Next, on the left navigation menu under "Sales", head to the "Credit Notes" page. The Credit Note that you just deleted from the Invoice earlier will be there with an "Open" status. Click the Credit Note to open.
On the toolbar above the Credit Note click on the 3-dot menu icon and select "Refund" on the dropdown menu.
Fill up the reason for the Refund in the Description box, and ensure all other details are in order before clicking the "Save" button.
Next, you will need to push this updated Credit Note to MyInvois portal by clicking the "Push to MyInvois" button and wait for it the "E-invoice success" notice, then close the pop-up.
Lastly, click "Push to MyInvois" one more time to record the Refund Note in the MyInvois portal. Upon completion you will receive a successful Refund Note notice which you can close to complete this process.