I'm confused: When I press on 'Log Payment' on an invoice - a box with 'Apply from credit [ GBP 100.04]' appears and I have no idea where this comes from - what do I need to look at to see where I have accidentally added a credit of £100.04! Thanks

[Lurch]

From the FAQ;

http://community.quickfile.co.uk/t/power-user-subscription-vat-invoice/5927/2