1、This is Because you do not have a valid Security Certificate .
这是因为您没有一个有效的安全性证书。
2、It either provides information or facilitates a change to business data from one valid and consistent state to another.
它提供信息或简化业务数据从一个有效的、一致的状态向另一个状态的转变。
3、The user name should consist of alphanumeric characters and be a valid structure for all systems within an organization so that each person only has one user name.
certificate, credential,diploma,voucher,letter,还有：chirograph ['kairgr:f] n. 证书,亲笔证书 carte [k:t] n. 地图(证书) exequatur [eksi'kweit] n. 领事证书 testamur [tes'teim] n. 考试及格证书 baccalaureat 法国中学结业证书;法国高中全国会考;业士 waiver ['weiv] n. 放弃,弃权,弃权证书
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