(16)In order not to impair the efficiency of payment systems, and in order to balance the risk of driving transactions underground as a result of overly strict identification requirements against the potential terrorist threat posed by small transfers of funds, the obligation to check whether information on the payer or the payee is accurate should, in the case of transfers of funds where verification has not yet taken place, be imposed only in respect of individual transfers of funds that exceed EUR 1 000, unless the transfer appears to be linked to other transfers of funds which together would exceed EUR 1 000, the funds have been received or paid out in cash or in anonymous electronic money, or where there are reasonable grounds for suspecting money laundering or terrorist financing.