A 'Tax Invoice' contains not only information relevant to what was purchased but also other important information like ABN (Tax Number) and Contact Information.
The below highlighted fields will be displayed on the customers Tax Invoice.
Configure Company Name & ABN
Navigate: Maintain > System Administration > Company Details
Update: Company Name & ABN Fields
Configure Contact Information for the Branch
Navigate: Maintain > System Administration > Store Maintenance > Select Branch
Update: Postal Address Area, Tel No, Fax No & Email