delivery of goods more than provided in the contract (a comparative study in iranian law, international sale of goods convention and english law)

the seller must deliver the goods in conformity with the contract. one of cases of conformity is its conformity with the contract in terms of quantity. namely, the seller must deliver the goods that are equal with the specified amount in the contract. in practice, the delivered goods may be larger than the amount specified in the contract. in iranian law, where the goods are larger than contractual quantity, two presumptions are imaginable. if the quantity has secondary aspect, the contract will be recoverable by the seller. but, where quantity is essential, the excess will belong to him. in english law, where the seller delivers a quantity of goods larger than he contracted to sell, the buyer may accept the goods included in the contract and reject the rest, or he may reject the whole. in convention, the buyer may take delivery or refuse to take delivery of the excess delivery.