Article 47 CISG
(1) The buyer may fix an additional period of time of reasonable length for performance by the seller of his obligations.
(2) Unless the buyer has received notice from the seller that he will not
perform within the period so fixed, the buyer may not, during that period, resort to any remedy for breach of contract. However, the buyer is not deprived thereby of any right he may have to claim damages for delay in performance.