+ $line->unit_cost = get_unit_cost($line->stock_id);
+
+ write_customer_trans_detail_item(ST_CUSTCREDIT, $credit_no, $line->stock_id,
+ $line->item_description, $line->qty_dispatched,
+ $line->line_price(), $line_tax, $line->discount_percent,
+ $line->unit_cost, $line->src_id, $trans_no==0 ? 0: $line->id);