62In that regard, it must be noted that, subject to the right to reparation which flows directly from EU law, where those conditions are satisfied, it is on the basis of the rules of national law on liability that the State must make reparation for the consequences of the loss or damage caused, provided that the conditions for reparation of loss or damage laid down by national law are not less favourable than those relating to similar domestic claims (principle of equivalence) and are not so framed as to make it, in practice, impossible or excessively difficult to obtain reparation (principle of effectiveness) (Köbler, paragraph 58; Case C-524/04Test Claimants in the Thin Cap Group Litigation [2007] ECR I-2107, paragraph 123; and Transportes Urbanos y Servicios Generales, paragraph 31).