(27)Where this Regulation authorises EBA to apply national law transposing Directives, such national law can be applied by EBA only to the extent necessary for carrying out the tasks conferred on it by Union law. Therefore, EBA should apply all the relevant Union rules, and where such rules are laid down in Directives, it should apply national law transposing those Directives to the extent required by Union law, aiming at an even application of law throughout the Union while respecting the relevant national law.