Judgment_paragraph 67 · ZQ v Medizinischer Dienst der Krankenversicherung Nordrhein, Körperschaft des öffentlichen Rechts (C-667/21)

67It should also be pointed out that a Member State which intends to avail itself of the option provided for in Article 9(4) of that regulation must, in accordance with the principle of proportionality, ensure that the practical consequences, in particular of an organisational, economic and medical nature, arising from the additional requirements with which that State intends to impose compliance, are not excessive for controllers, which are not of a size or do not necessarily have the technical and human resources such as to be sufficient to meet those requirements. Those requirements cannot undermine the effectiveness of the processing which is expressly provided for in Article 9(2)(h) of that regulation and set out in Article 9(3).