You must apply client due diligence (CDD) measures when you: • establish a business relationship • carry out an occasional transaction that amounts to a transfer of funds within the meaning of Article 3.9 of the funds transfer regulation exceeding €1,000 • suspect money laundering or terrorist financing • doubt the veracity or adequacy of documents or information previously obtained for the purposes of identification or verification, or • carry out an occasional transaction that amounts to €15,000 or more, whether the transaction is executed in a single operation or in several operations which appear to be linked There are further requirements relating to CDD measures on existing clients. CDD measures involve, among other things, identifying and verifying the identity of the client, as well as assessing and obtaining information on the purpose and intended nature of the business