Hi there, ncugura. The option to print the BAS with a payment reference number in QuickBooks Online is unavailable.
Please keep in mind that QuickBooks is used for record-keeping purposes. If you have already processed your BAS payment, I suggest reaching out to the ATO directly to confirm your reference number.
If you haven't recorded the BAS payment in QuickBooks yet, you can refer to this article for detailed guidance.
Don't hesitate to reply if you need further assistance. We're here to help.