detǝils now offers the possibility to mark an invoice as a CORRECTED Invoice.
Marking the checkbox "Correction" in an invoice leads to placing "Invoice correction" before the invoice number.
Don't confuse this with the CANCEL function which cancels an invoice (german: STORNO), which means the invoice will be invalid but (the number) remains in your books.
This feature is both available in Version 1 and in Version 2.0:
