1.Without prejudice to Article 30 or any other legal duty to disclose information, each transmission, storage and/or LNG system operator, and each transmission system owner, shall preserve the confidentiality of commercially sensitive information obtained in the course of carrying out its activities, and shall prevent information about its own activities which may be commercially advantageous from being disclosed in a discriminatory manner. In particular, it shall not disclose any commercially sensitive information to the remaining parts of the undertaking, unless this is necessary for carrying out a business transaction. In order to ensure the full respect of the rules on information unbundling, Member States shall ensure that the transmission system owner including, in the case of a combined operator, the distribution system operator, and the remaining part of the undertaking do not use joint services, such as joint legal services, apart from purely administrative or IT functions.
2.Transmission, storage and/or LNG system operators shall not, in the context of sales or purchases of natural gas by related undertakings, misuse commercially sensitive information obtained from third parties in the context of providing or negotiating access to the system.
3.Information necessary for effective competition and the efficient functioning of the market shall be made public. That obligation shall be without prejudice to protecting commercially sensitive information.