I represent the Warsaw University of Technology. I would like to ask, is it possible to receive a proforma invoice from Interrail for the purchase of 2 Interrail Global Passes for 2 people (12-27 years of age) for 7 days of travel within 1 month? Or do we rather need to purchase these tickets via the website https://www.interrail.eu/en and this is the only way to buy Global Passes and possibly then ask for an invoice.
We would need a proforma invoice, because it is the Warsaw University of Technology (WUT) that sends two people abroad and WUT will pay for their tickets. In order to pay, the Warsaw University of Technology's accounting must have a basis for this, i.e. a proforma invoice, on the basis of which the transfer will be made for the tickets. Otherwise, the institution will not transfer funds.
I will be grateful for any information.