I currently issue a voucher # for each of my invoices I process and file in numerical order. Sometimes I process more than 100. The software we use allows to input a voucher # when invoice is entered. When auditors come in and audit our files and request to see back-up for a specific transaction, I am able view transaction and get voucher # and pull the invoice. We are currently in the process of changing our software and the software I've looked into lack a specific field I can use for this. I'd like have some other ideas on filing systems.
