(38)In view of the speed with which modern fully automated payment systems process payment transactions, which means that after a certain point in time payment orders cannot be revoked without high manual intervention costs, it is necessary to specify a clear deadline for payment revocations. However, depending on the type of the payment service and the payment order, the point in time may be varied by agreement between the parties. Revocation, in this context, is applicable only to the relationship between a payment service user and payment service provider, thus being without prejudice to the irrevocability and finality of payment transactions in payment systems.