As a rule, we assume a threshold of EUR 15 000, which means, more or less, that above this amount you should expect a source enquiry.
However, this should not be taken for granted. There are situations in which we have enough information about a customer not to ask about this with such an amount, and there are also situations in which we will ask before reaching this limit. The EUR 15 000 mentioned is the sum of transactions over a certain period of time.
