Thank you for posting that, I should have mentioned that I did try Glenn’s solution but unfortunately it doesn’t work for my particular case. I can correct the total with an adjustment but the VAT is still off - if I correct the VAT then the total is off.
It’d be great to be able to get all of the numbers matching up with my invoices/accounts so any further help would be really appreciated.
Another way you can enter this is from the multi-invoice entry screen. So locate the supplier, go to the “Create new” menu and select “Bulk purchase entry”.
This method then lets you override the VAT amount as you wish.