When suppliers send invoices for payment due, we need to record certain things... that the invoice has been received and reconciled with the itinerary and a copy of the invoice stored for later reference.

It would be great if you could load the invoices/vouchers from the suppliers directly into the itinerary so that anyone checking it could access them quickly to check for accuracy. There could be a repository of all the supplier invoices stored centrally filed under the reference of that itinerary.

The Invoice number may need to be added for the purposes of exporting data to accounting software.

An indication the Invoice has been received via a check box would be useful (adding the invoice number could be enough?)