1. Obliged entities shall apply customer due diligence measures in any of the following circumstances:
(a) when establishing a business relationship;
(b) when carrying out an occasional transaction of a value of at least EUR 10 000, or the equivalent in national currency, whether that transaction is carried out in a single operation or through linked transactions, or a lower value laid down pursuant to paragraph 9;
(c) when participating in the creation of a legal entity, the setting up of a legal arrangement or, for the obliged entities referred to in Article 3, points (3)(a), (b) or (c), in the transfer of ownership of a legal entity, irrespective of the value of the transaction;
(d) when there is a suspicion of money laundering or terrorist financing, regardless of any derogation, exemption or threshold;
(e) when there are doubts about the veracity or adequacy of previously obtained customer identification data;
(f) when there are doubts as to whether the person they interact with i
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