if a party of two or more persons have no common rights and obligations with respect to the object of action, the act of any one of them shall not be valid for the rest.
对诉讼标的没有共同权利义务的，其中一人的诉讼行为对其他共同诉讼人不发生效力。
2
To make valid or binding by a formal or legal act; ratify.
通过正式或法律的行为使有效或有约束力；认可。
3
Transaction security is deliberately founded to protect the reliance sense of transaction parties who believe that a legal act of transaction nature is valid.