(9)There are cases where an AIFM wishing to test investor appetite for a particular investment idea or investment strategy is faced with diverging treatment of pre-marketing in different national legal systems. The definition of pre-marketing and the conditions under which it is permitted vary considerably between those Member States in which it is permitted, whereas in other Member States there is no concept of pre-marketing at all. To address those divergences, a harmonised definition of pre-marketing should be provided and the conditions under which an EU AIFM can engage in pre-marketing should be established.