1.3.2 Insist that the digital business document stays entirely unchanged for both the originator and the receiver (meaning that exactly the same physical document must be found on both sides on request) in order to make sure that a voucher is only used once. This enables automated checks (based on hash calculations)

1.3.2 Insist that the digital business document stays entirely unchanged for both the originator and the receiver (meaning that exactly the same physical document must be found on both sides on request) in order to make sure that a voucher is only used once. This enables automated checks (based on hash calculations) ()