Credit note and positive result

How did you try to enter this?

When you enter this under purchase invoices, it is important that you tick the box indicating that it is a credit note. The date you select for this is the document date of the credit note, even if the original invoice was entered in a previous quarter or financial year, for example.

What CV says above is correct. In addition, make sure you fill in the amount of the credit note as a positive amount.