(9)The full traceability of transfers of funds can be a particularly important and valuable tool in the prevention, detection and investigation of money laundering and terrorist financing, as well as in the implementation of restrictive measures, in particular those imposed by Regulations (EC) No 2580/2001, (EC) No 881/2002 and (EU) No 356/2010, and in full compliance with Union regulations implementing such measures. It is therefore appropriate, in order to ensure the transmission of information throughout the payment chain, to provide for a system imposing the obligation on payment service providers to accompany transfers of funds with information on the payer and the payee.