1.Competent authorities of an institution acting as a clearing member may require any CCP in which that institution acts as a clearing member to undertake the calculation referred to in Article 1(1) and the reporting referred to in Article 2(1) with either a daily or a weekly frequency in either of the following situations:
(a)where, following the default of one clearing member, a CCP is obliged to use any portion of the pre-funded financial resources that it contributed to the default waterfall in accordance with Article 43 of Regulation (EU) No 648/2012;
(b)where, following the default of one clearing member a CCP is obliged to make use of the default fund contributions of non-defaulting clearing members in accordance with Article 42 of Regulation (EU) No 648/2012.