(3)Capital requirements for positions in a securitisation under Regulation (EU) No 575/2013 are to be subject to the same calculation methods for all institutions following a hierarchy of approaches as set out in Article 254 of that Regulation. Institutions using the External Ratings Based Approach should calculate risk-weighted exposure amounts based on 18 Credit Quality Steps for long-term external credit assessments as established in Article 263 and 264 of that Regulation, which introduces enhanced granularity and risk sensitivity.