I am booking a return trip from HKG in J.
The company paying for this trip is requesting an official invoice/receipt for reimbursing me. They want the original receipt and do not accept some email. We all know how a copy of such "email receipt" can be "modified". In Chinese/British tradition, a TA provides a chopped invoice (a small tax levy is paid with official stamp) and a receipt acknowledgement for payment by credit card.
Does BA provide such original receipt and can it be requested during booking?