I'm new to being self-employed and confused. How to precess a return postage fee paid by the customer? I assume I know how to process it in cases where return is arranged myself (db Expense Carriage Outwards (returns) cr bank a/c, issue a credit note for a sales invoice db sales cr customers a/c) as I have an invoice from the courier company. But how to process (double-entry wise) a returned postage fee paid by customer and what document to issue/ask/print is a mistery to me...