25As regards the principle of effectiveness, it should be noted that every case in which the question arises as to whether a national procedural provision makes the application of EU law impossible or excessively difficult must be analysed by reference to the role of that provision in the procedure, its progress and its special features, viewed as a whole, before the various national bodies (judgment in Kušionová, C‑34/13, EU:C:2014:2189, paragraph 52 and the case-law cited).
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