(40)It is essential, for the fully integrated straight-through processing of payments and for legal certainty with respect to the fulfilment of any underlying obligation between payment service users, that the full amount transferred by the payer should be credited to the account of the payee. Accordingly, it should not be possible for any of the intermediaries involved in the execution of payment transactions to make deductions from the amount transferred. However, it should be possible for the payee to enter into an agreement with his payment service provider under which the latter may deduct his own charges. Nevertheless, in order to enable the payee to verify that the amount due is correctly paid, subsequent information provided on the payment transaction should indicate not only the full amount of funds transferred but also the amount of any charges.