ATO is asking me what is Intuit Quickbooks ABN? Which one is it?

Hi UserAccounts29, 

Thank you for reaching out. Do you mind if I ask what are you trying to achieving?

Are you trying to enable STP?

How to set up Single Touch Payroll

Are you trying to enable BAS e-Lodgement?

Enable BAS electronic lodgement in QuickBooks Online

Thank you and please let us know if you require any additional assistance.