Entering Additional Costs on Credit Notes and Debit Notes
If you are creating a credit note from a return, the additional cost details for the primary vendor are displayed from the originating receipt, if any. If you are creating a credit note or debit note from an invoice, the additional cost details are displayed from the invoice. The additional cost amount appears as zero and you enter the amount to be credited or debited.
You cannot change the additional cost code, proration and reproration methods, or the expense and return general ledger accounts. You can add new additional costs on credit notes and debit notes but you must select No Proration as the proration method, so that the cost is expensed to a general ledger account.