invoices should not be subject to changes, once they have an invoice number and have been sent out to the client. However, XTRF allows making changes to the invoice (change date, change currency, change amount etc), by clicking "Bearbeiten" (Edit).
Is there a way to make such actions impossible? The German law requires us that invoice can't be changed or deleted, once sent out and assigned with an invoice number.
Thanks for your feedback here.
Customer support service by UserEcho