Letter of credit must bear a valid period which may be longer than the shipping period, bur the shipping date should not be later than the validity date of the credit.

信用证必须有有效期，信用证的有效期可以晚于装运期，但装运期却不能迟于有效期。

youdao

You can deal with this during the initial processing or later, when reporting data, because the OFX date format doesn't affect the validity of the XML.

可以在初始处理或在之后报告数据时解决这个问题，因为OF X日期格式并不影响XML的有效性。

youdao

Valid To date: End date of certificate's validity.

Valid To Date：证书有效期的结束日期。

youdao

Though efforts continue to be made for greater emissions standardization, questions remain about the validity of many of the voluntary offsets that have been purchased and sold to date in the United States due to a lack of uniformity around methodology, monitoring, and verification.

FORBES: Should Companies Outsource Carbon Reduction?