本文档是北京信息技术有限公司在与XX公司的客户关系管理系统实施合同基础上编制的。本文档的编写为下阶段的设计、开发提供依据，为项目组成员对需求的详尽理解，以及在开发开发过程中的协同工作提供强有力的保证。同时本文档也作为项目评审验收的依据之一。-This document is Beijing Information Technology Co., Ltd. with XX company' s customer relationship management system, prepared on the basis of the implementation of the contract. This document is prepared for the next stage of the design, development provide the basis for the project team members a detailed understanding of needs, as well as the development process in the development of collaborative work to provide a strong guarantee. Meanwhile, the document also serves as the basis for one of the project review and acceptance.