Difficulties in enterprise-level Project Management Information System Planning

For a large enterprise with a project as its main business, the definition of management caliber and business coupling is the most difficult part during enterprise-level project management information system planning, between an enterprise and a second-level organization, there is a data stream reported step by step between the second-level organization and its subordinate projects. It is at the enterprise management level, and the management aims at refinement, we hope that we can more penetrate into all aspects of the project management process to achieve full real-time control. At the project level, we do not want to expose too many business processes to the enterprise's supervision system, at the same time, we do not want to strip the daily business process from the data submission process.
If you simply copy the data submitted step by step to the information system, the operator will be disgusted with the incremental work brought about by the simple submission mechanism, and the enterprise will not be able to verify the authenticity of the data reported by subordinate projects.
If the project-level business system is integrated with the enterprise-level business system for overall planning to form a complete data responsibility system, such planning is theoretically optimized, however, precise management has certain benchmark requirements for data association, Network Foundation, business timeliness, personnel quality, and management level, and these benchmark requirements cannot be met within a short period of time.
Therefore, how to conduct a hierarchical planning of Management caliber and business coupling between the fine and extensive management caliber and the close and loose coupling of information requirements and business processes, in addition, it is not easy to have strong operability and foresight.