Interesting question! My answer is based my best knowledge, not a sure answer. Most likely the opening bank has NO rights to reject it. Since the nego bank has agreed to pay, that means docs met the LC requirements. Choices of the buyer: 1. Try to find any discrepancies on the docs, even a comma. 2. Request a court for "pending payment order". Opening bank will be forced not to pay. What are you trying to do? Conducting a fraud?Suggest you do right things.