(5)The nature of the conditions imposed by a CCP in order for clearing participants to access its services and the interlinkages between those clearing participants have repercussions on the way a CCP may be affected by an adverse event in relation to those participants. Therefore, when taking into account the criterion set out in point (c) of Article 25(2a) of Regulation (EU) No 648/2012, ESMA should determine to the extent possible the identity of clearing participants to the CCP, in particular where that CCP provides services to clearing participants established in the Union. ESMA should also determine the relevant market share or relative importance of clearing participants or groups of clearing participants in that CCP. Insofar as necessary to assess the impact it might have on the clearing membership structure, ESMA should assess the conditions and options under which the CCP provides access to its clearing services. With respect to a CCP that is likely to be systemic to the Union, ESMA should assess whether the legal and prudential requirements that a CCP imposes on its clearing members are sufficiently stringent.