I wonder how to conform to some points:
— have invoice number repeated on each page when multi-page: would require in the report invoice.fodt to repeat some tests in header and have a different header on pages > 1, because the same report is used for invoices in draft and posted states
— how to print mentions for professional clients only (fees for due payments)
— show VAT number of the client except if total amount < 150 or client is not a professional
For those two points the question I have is: how could Tryton know a client is a professional except by having a VAT number filled and checked?
Another point probably linked to taxes rules is: how to enforce that sales made to European clients have tax computed if VAT number is not filled in?