(a)the purchase of goods or services which was invoiced during the refund period, provided that the VAT became chargeable before or at the time of the invoicing, or in respect of which the VAT became chargeable during the refund period, provided that the purchase was invoiced before the tax became chargeable.
a)l’achat de biens ou de services qui a été facturé au cours de la période du remboursement, à condition que la taxe soit devenue exigible avant ou au moment de la facturation, ou pour lesquels la taxe est devenue exigible au cours de la période du remboursement, à condition que l’achat ait été facturé avant que la taxe ne soit devenue exigible.