This is probably a simple enough question but I'm not sure how to do it.
Unusually, instead of a credit note, I've received a cheque from a supplier against damages caused by them (they're a delivery co). I can't see how I can raise an invoice to a supplier on Sage and then pay for it with the cheque so would I have to set them up as a customer and contra this or is there an easier method?
Depends on which version of Sage you have. On newer versions there is a supplier refund wizard you could use (you'd have to create a credit note from the supplier).