Record PO payment AUD/SGD

I know this is all wrong, first time trying to do this in a parallel test business account … but need some basic instructions for how to setup properly & fix this:

The actual amount on the Vendor Invoice is SGD$ 2,550.00
The actual AUD transaction from the Bank Statement is AUD$ 2,482.48

Found it, was GST on, should be off … can delete topic