Anyone use Sage 50 - how to show Amazon Fees?

In Sage 50, what VAT code do you use for the Amazon fees?

Since start of our year we have used T0, but am seeing that it should be classified as a zero rate vat service from EU. So should be T16.

We have already posted using T0 on a "bank payment2, Sage won’t allow them to be changed to T16 as it says bank payments can’t be T16.

So what should be the right thing to do?