(6)In the event of a disruption to a CCP, clearing participants may have to rely, whether directly or indirectly, on the provision by other CCPs of similar or identical services. In order to assess the relative importance of the CCP applying for recognition, ESMA should therefore, when taking into account the criterion set out in point (d) of Article 25(2a) of Regulation (EU) No 648/2012, determine whether clearing participants may substitute some or all of the clearing services provided by that CCP with services provided by other CCPs, in particular where those alternative CCPs are authorised or recognised in the Union. Where clearing members and clients established in the Union can only clear certain products subject to a clearing obligation in one third-country CCP, the systemic importance of that CCP should be considered with acute attention by ESMA.