The approval process will not change. The NHS organisation will continue to login to the payment system as they currently do to approve paper invoices. Invoices are received and are available to approve within 15 minutes of you submitting an invoice via Tradeshift. Fewer invoices will be retuned due to scanning errors and the up-front validation rules in place on Tradeshift. The image appears in the payment system exactly as it appears on Tradeshift.