Hi Tyraus,

If you have recently lodged an incorrect BAS our Customer Service team has the facility to unlodge / undo a lodged BAS in QuickBooks Online. If you require you BAS to be reversed please reach out to our support team by clicking here. This way you can amend the figures and relodge to match the ATO.

If you have a accountant user currently connect to the file they will have the ability to login and unlodge this BAS for you. 

Thanks, 

-Steven