修改信用状 meaning in English

change an l/c

However , in case the merchandise has been prepared and ready for shipment before shipment deadline but the shipment could not effected due to any of the abovementioned causes , the buyer shall extend the shipping deadine by means of amending relevant i / c or otherwise upon the request of the seller
不过，在装货期限截止前，如货物业经备妥待运，但因前述事故之一发生而致未能装运，则买方于接到卖方请求时，应以修改信用状方式或其他方式延长装货期限。