A point at which a technical project document (requirements specification, functional specification, etc.) Or developed component of the solution cannot change without significant justification and approval by key project stakeholders.

• 一个时间点,如没有关键的项目利益相关者的有效论证和批准,此时不能对技术项目文档(要求规范、功能规范等)或解决方案的已开发组件进行更改。