55 140. A customary principle of international law establishes that a State that has ratified a human rights treaty must make such amendments to its domestic legislation as may be necessary to ensure full compliance with the obligations undertaken.103 141. Pursuant to Article 2 of the American Convention, the States Party are under the obligation to adopt, pursuant to their constitutional procedures and the provisions of this Convention, such legislative or other measures as may be necessary to make those rights and liberties, protected under said Convention, effective. 142. The Court has pointed out several times before that this provision places the States Party under the general obligation to adjust their domestic legislation to the provisions of the Convention itself, to thus guarantee the rights enshrined in the Convention. Domestic legal provisions to this end must be effective (the principle of effet utile), which means that the State must adopt such measures as may be necessary for actual compliance with what is set forth in the Convention. 143. The general duty set forth in Article 2 of the American Convention requires adoption of two types of measures: on the one hand, elimination of all kinds of provisions and practices that breach guarantees set forth in the Convention; on the other hand, adoption of provisions and development of practices that lead to effective observance of said guarantees.104 144. In the framework of the general obligation set forth in Article 2 of the Convention, the Court accepts the terms of the agreement among the parties to constitute a consultation mechanism, “with the aim, as appropriate, of adjusting and modernizing domestic provisions with respect to matters pertaining to [detention conditions for children], for which purpose experts and other civil society organizations will be summoned,” to propose to the appropriate bodies provisions aiming to update and modernize domestic provisions. * * * 145. Furthermore, as it has ordered several times before,105 the Court finds that, as a measure of satisfaction, the State must publish in the Official Gazette, once only, chapter VI and the operative part of the instant Judgment. XIII LEGAL COSTS AND EXPENSES Arguments of the representatives of the next of kin of the victim 103 Cf. “Five Pensioners” Case, supra note 4, para. 164; Cantos Case, supra note 6, para. 59; and Hilaire, Constantine and Benjamin et al. Case, supra note 5, para. 111. 104 Cf. “Five Pensioners” Case, supra note 4, para. 165; Cantos Case, supra note 6, para. 61; and Hilaire, Constantine and Benjamin et al. Case, supra note 5, para. 113. 105 Cf. Juan Humberto Sánchez Case, supra note 4, para. 188; Las Palmeras Case, Reparations, supra note 5, para. 75; and El Caracazo Case, Reparations, supra note 5, para. 128.