Notwithstanding Article 7(3), a competent authority is not obliged to inform an entity subject to an on-site inspection of such inspection in advance if there are indications that there exist facts of a serious nature that threaten the smooth functioning of the SIPS or that informing that entity of the need to proceed with an on-site inspection may undermine its results. In this case, the decision to proceed with an on-site inspection shall indicate the reasons to proceed without informing that entity in advance and shall be provided to that entity only once the inspection has started.