(6)In accordance with Regulation (EU) No 1024/2013, the ECB applies all relevant Union law and, where this Union law is composed of directives, the national legislation transposing those directives. Where the relevant Union law is composed of regulations and where currently those regulations explicitly grant options and discretions for Member States, the ECB should also apply the national legislation exercising those options and discretions. Such national legislation should not affect the smooth functioning of the SSM, for which the ECB is responsible.