What should be considered in the practical application of this case is the lesson: that is, after the contract is signed and the letter of credit is received, the seller should actively prepare the goods, so that the situation that the goods in stock are exhausted by the time of delivery will not happen, and this case will not happen. This is the practical significance of this case.

In this case, of course, we can do our best, but there are still risks, that is, the buyer wants to sell well at a low price, that is, if the second-class red dates are marked on the invoice, it means that the delivered goods are not the third-class goods stipulated in the letter of credit, then the issuing bank can refuse to pay for the goods on the grounds that the quality does not meet the requirements of the letter of credit. And the buyer can even use this as a threat to reduce the price, so the seller will not only lose the price difference of two or three grades, but also discount again-this risk is not impossible.

Therefore, since this case is settled by letter of credit, and it is orderly, then the documents can't be annotated on the invoice, and it should be written as "second-class red dates are still priced at third-class", but should be written according to the level stipulated in the letter of credit to ensure that the documents are presented in accordance with the provisions of the letter of credit, so as to use the letter of credit to receive foreign exchange safely.

As for the best, I can only admit that I am unlucky and eat dumb losses, but I can't say anything.