Article 450. The circumstances of the modification and avoidance of the contract

1. The modification and avoidance of a contract shall be subject to the agreement of the parties, unless otherwise provided for in this Code, other laws or a treaty. with all the parties involved in the business, it may be possible to modify or terminate such a contract by agreement of both the majority and the majority of the persons concerned, 2. On the request of one of the 100 members of the European Union, a majority may be defined in the treaty referred to in this paragraph. The contract may only be modified or terminated by a court decision: (1) in the event of a fundamental breach of contract by the other party; (2) in other cases provided for in this Code, by other laws A breach of a contract by one of the parties that causes the other party such harm that it is largely deprived of what it was entitled to expect is recognized as a material breach. 4. A party to whom this Code, other laws or treaty has been granted the right to modify a treaty unilaterally must, at the time of its entry into force on 1 June 2015 The exercise of this right to act in good faith and reasonably within the limits provided for in this Code, other laws or treaty.