http://www.legislation.gov.uk/eur/2017/460/article/2Commission Regulation (EU) 2017/460 of 16 March 2017 establishing a network code on harmonised transmission tariff structures for gas (Text with EEA relevance)Commission Regulation (EU) 2017/460Commission Regulation (EU) 2017/460 of 16 March 2017 establishing a network code on harmonised transmission tariff structures for gas (Text with EEA relevance)King's Printer of Acts of Parliamenthttps://webarchive.nationalarchives.gov.uk/eu-exit/https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32017R0460texttext/xmlen2025-01-08Expert Participation2020-12-31 CHAPTER I <Strong>GENERAL PROVISIONS</Strong> ScopeArticle 21This Regulation shall apply to all entry points and all exit points of gas transmission networks with the exception of Chapters III, V, VI, Article 28, Article 31(2) and (3) and Chapter IX which shall apply only to interconnection points. Chapters III, V, VI, Article 28 and Chapter IX shall apply to entry points from or exit points to other countries that are not member States, or both, where the national regulatory authority takes a decision to apply Regulation (EU) 2017/459 at those points.2If a transmission system operator is regulated by both national regulatory authorities, where relevant they must cooperate with each other regarding the regulation of that transmission system operator.3.If a transmission system operator is regulated by a national regulatory authority and a non-UK regulatory authority, where relevant the national regulatory authority must endeavour to cooperate with the non-UK regulatory authority regarding the regulation of that transmission system operator.4.The interconnection points within the scope of this Regulation are those where transmission system operators or network users carry out functions or activities that are regulated by a national regulatory authority.5.In any case where a transmission system operator cannot comply with an obligation set out in this Regulation without the cooperation of a non-UK TSO, the obligation must be interpreted as a requirement on the transmission system operator to—acomply with the obligation in so far as it is able to do so without the cooperation of the non-UK TSO; andbendeavour to cooperate with the non-UK TSO in order to comply with that obligation.6.Paragraph 5 applies so that obligations that apply to transmission system operators at an interconnection point apply to a transmission system operator that is adjacent to a non-UK TSO at an interconnection point.2.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Art. 2(2)-(6) inserted (31.12.2020) by The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 (S.I. 2019/531), reg. 1(2), Sch. 5 para. 2(4); 2020 c. 1, Sch. 5 para. 1(1)Words in Art. 2(1) substituted (31.12.2020) by S.I. 2019/531, Sch. 5 para. 2(2) (as substituted by The Gas Tariffs Code (Amendment) (EU Exit) Regulations 2019 (S.I. 2019/1393), reg. 1(2), Sch. para. 2; 2020 c. 1, Sch. 5 para. 1(1))Art. 2(2) omitted (31.12.2020) by virtue of The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 (S.I. 2019/531), reg. 1(2), Sch. 5 para. 2(3); 2020 c. 1, Sch. 5 para. 1(1)