Article 428: Agreement of accession
1. A treaty of accession shall be recognized as a treaty the terms of which are defined by one of the parties in forms or other standard forms and which may have been accepted by the other party other than by accession. 2. A party to a contract may request termination or modification of the contract if the contract of accession is not contrary to law or other law. to exclude or limit the liability of the other party for breach of obligations or to contain other manifestly conditions for the acceding party which it would not have accepted on the basis of its reasonably understood interests if it had the opportunity to participate in the determination of the terms of the contract. If the contract is modified or avoided by a court at the request of a party to the contract, the contract shall be deemed to have been in force. 3. The rules provided for in paragraph 2 of this article shall also apply when concluded. and a treaty other than a treaty of accession, the terms of the treaty are determined by one of the parties, and the other party is placed in a position, substantial because of the apparent inequality of bargaining power. but making it difficult to agree on the other content of the individual terms of the treaty.