party. Article 27 Unless otherwise expressly provided in this Part of the Convention,if any notice,request or other communication is given or made by a party in accordance with this Part and by means appropriate in the circumstances,a delay or error in the transmission of the communication or its failure to arrive does not deprive that party of the right to rely on the communication. Article 28 If,in accordance with the provisions of this Convention,one party is entitled to require performance of any obligation by the other party,a court is not bound to enter a judgement for specific performance unless the court would do so under its own law in respect of similar contracts of sale not governed by this Convention. Article 29 (1)A contract may be modified or terminated by the mere agreement of the parties. (2)A contract in writing which contains a provision requiring any modification or termination by agreement to be in writing may not be otherwise modified or terminated by agreement.However,a party may be precluded by his conduct from asserting such a provision to the extent that the other party has relied on that conduct. (Obligations of The Seller) Article 30 The seller must deliver the goods,hand over any documents relating to them and transfer the property in the goods,as required by the contract and this Convention. (Delivery of the goods and handing over of documents) Article 31 If the seller is not bound to deliver the goods at any other particular place,his obligation to deliver consists: (a)if the contract of sale involves carriage of the goods--in handing the goods over to the first carrier for transmission to the buyer; (b)if,in cases not within the preceding subparagraph,the contract relates to specific -6-- 6 - party. Article 27 Unless otherwise expressly provided in this Part of the Convention, if any notice, request or other communication is given or made by a party in accordance with this Part and by means appropriate in the circumstances, a delay or error in the transmission of the communication or its failure to arrive does not deprive that party of the right to rely on the communication. Article 28 If, in accordance with the provisions of this Convention, one party is entitled to require performance of any obligation by the other party, a court is not bound to enter a judgement for specific performance unless the court would do so under its own law in respect of similar contracts of sale not governed by this Convention. Article 29 (1) A contract may be modified or terminated by the mere agreement of the parties. (2) A contract in writing which contains a provision requiring any modification or termination by agreement to be in writing may not be otherwise modified or terminated by agreement. However, a party may be precluded by his conduct from asserting such a provision to the extent that the other party has relied on that conduct. (Obligations Of The Seller) Article 30 The seller must deliver the goods, hand over any documents relating to them and transfer the property in the goods, as required by the contract and this Convention. (Delivery of the goods and handing over of documents) Article 31 If the seller is not bound to deliver the goods at any other particular place, his obligation to deliver consists: (a) if the contract of sale involves carriage of the goods--in handing the goods over to the first carrier for transmission to the buyer; (b) if, in cases not within the preceding subparagraph, the contract relates to specific