There has been quite a bit of discussion about this Tax payable account following @lubos explanation here.
For a newcomer to Manager, what would be the recommended or preferred approach:
Option 1: Create an ordinary Tax payable account (where the starting balance can be adjusted), and then reconfigure the two GST 10% and GST 10% (CAPEX) tax codes to use this manually created Tax payable account instead of the built-in Tax payable account (automatically created by the imported Australia: Business Activity Statement - Full localization.)
Option 2: Adjust the starting balance of the automatically created built-in Tax payable account with a Journal Entry. (To balance this Journal Entry would require creating an Opening Balance Equity account (as is the practice of other accounting software) or using the Retained earnings account).
I noticed that with Option 1, the automatically created built-in Tax payable account cannot be removed. You therefore end up with two Tax payable accounts. Maybe as, suggested by @Ealfardan, Option 2 would be the better approach until this issue is more definitively resolved? Option 2 might also follow a more traditional accounting software approach.