Changing SOP Tax Rates using the Support Debugging Tool

This is a reposting of an article I originally wrote on my Developing for Dynamics GP blog.
[Edit] 05-Apr-2023: Updated code available from the article below:
Back on the 1st July 2000, Australia changed its sales tax system from a wholesale sales tax with various rates (depending on the item) to a Goods and Services Tax (GST) with a fixed 10% rate.
To go with the change in the tax system, the Australian Taxation Office (ATO) also brought in a new tax return reporting system known as the Business Activity Statement.
