When reporting on a customer, it can be useful to see the last invoice details. We currently store the Last Invoice (Date) on sales ledgers but you cannot see the invoice number. In Sales Ledger stats we store last order (Date) and Last Order Number. Have the last invoice number available will help our user to have a clearer overview of their customer and any orders that are still being processed and invoiced for them. Customers could use this information when reporting trying an target specific customer based on their previously invoices.
