I've recently come across a Guernsey customer's invoice that is showing an item 25% discount which is working out the price of an item that is already discounted by 10% then removing the VAT off that price - whilst this is the correct process, the discount is showing incorrectly at 25% as it should show 10% and then the item should show as VAT Exempt.

Is the discount being shown at the accurate percentage on invoices something that can be looked into for VAT Exempt counties?