"[CISG] Article 86 largely follows Article 92 ULIS, with some points being clarified (inter alia, that steps must be reasonable 'in the circumstances'), and a third sentence inserted in Article 86(2)." Eberstein in Commentary on the UN Convention on the International Sale of Goods, Peter Schlechtriem ed. (Oxford 1998) 671 [citations omitted].
CISG Article 86 ULIS Article 92
1. If the buyer has received 1. Where the goods have been
the goods and intends to received by the buyer, he shall
exercise any right under the take reasonable steps to preserve
contract or this Convention them if he intends to reject them;
to reject them, he must take he shall have the right to retain
such steps to preserve them them until he has been reimbursed
as are reasonable in the his reasonable expenses by the
circumstances. He is seller.
entitled to retain them until
he has been reimbursed his 2. Where goods dispatched to the
reasonable expenses by the buyer have been put at his
seller. disposal at their place of
destination and he exercises the
2. If the goods dispatched right to reject them, he shall be
to the buyer have been bound to take possession of
placed at his disposal at them on behalf of the seller,
their destination and he provided that this may be done
exercises the right to reject without payment of the price and
them, he must take possession without unreasonable inconvenience
of them on behalf of the seller or unreasonable expense. This
provided that this can be done provision shall not apply where
without payment of the price the seller or a person authorized
and without unreasonable in- to take charge of the goods on
convenience or unreasonable his behalf is present at such
expense. This provision does destination.
not apply if the seller or a
person authorized to take
charge of the goods on his
behalf is present at the
destination. If the buyer takes
possession of the goods
under this paragraph, his rights
and obligations are governed
by the preceding paragraph.