We can add new fields into customer and supplier fields but these do not appear on the customer/supplier transaction summary page.
It would be useful to at least be able to nominate one field to appear on that page.
A couple of examples:
In one client we use an internal reference for supplier invoices which we have added as a field, it would be useful to see that alongside the invoice number o teh transaction summary.
Another client in the construction industry works on different sites and we have a field for this on the supplier invoice to help allocate costs, there are not mixed site invoices and it would be useful to seee the site loacation as well as supplier invoice number so we can copy from the same site to save re-typing site details on each entry.