Abstract
Public Administration Department, NTT DATA Corporation has been conducting the review of project plan of new or renewal projects with high risks since this year. The purpose of this activity is to offer know-how and advice for project management based on experience of senior PMs to the reviewed projects' managers. We have conducted this activity for about one year and found some problems. For example, the review was not always executed at the best timing, project managers and members didn't understand differences between this activity and existing other activities, and the project thought the effort to deal with the review was too heavy. In this paper, we introduce these problems (hardship point and improvement activity) and the lesson learned obtained from conducting this activity, and describes the result of the causal analysis and present actions to the problems, and the future works.