In Italy, if the user have a vat number, can request an invoice for deduce tax (but however have to pay it on the invoice, can’t exclude it) but if you don’t have vat number, then user should receive document with the details but with the voice “Payment receipt” instead of “Invoice” and with no reference to company name or vat number but only own details (name, last name, address, etc.). So the users should be able to decide if they want an invoice or a payment receipt. I hope i have explained well…