One of the main goals of the General Data Protection Regulation was to harmonize the way personal data is being protected in all Member States. This goal will not be achieved if a similar interpretation of its provisions does not accompany the application of the GDPR. It is particularly important when meaning is assigned to an indefinite phrase that different authorities and entities can understand variously as they apply the same law in each Member State. The phrase in question is that of “disproportionate effort” as used in Art. 14 para. 5 letter b of the GDPR. The article is intended to provide an exemption from complying with the controller’s obligation to provide information (where personal data have been obtained indirectly). Since the right to be informed about collecting and using personal data is one of the fundamental rights granted to the data subject under the GDPR, a uniform application of the standard laid down in Art. 14 of the GDPR is of importance to ensure.