Article 63 5.

Where the Commission, within two months of having been informed by ACER in accordance with paragraph 3, or by a regulatory authority in accordance with paragraph 4, or, on its own initiative, within three months of the date of the decision, finds that the decision of a regulatory authority raises serious doubts as to its compatibility with the network codes and guidelines referred to in this Directive or in Chapter VII of Regulation (EU) 2019/943, the Commission may decide to examine the case further. In such a case, it shall invite the regulatory authority and the parties to the proceedings before the regulatory authority to submit observations.