Abstract
The customer side system which is needed in business system development project being established, in addition role allotment being clear, the fact that you can work can contribute at the same time in accordance with the milestone is the key of success. But until when also the customer person in charge other works and additional post is many in actuality, bender side expects, the incoming order matter which cannot obtain job man-hour exists large number. While with this kind of case role of the customer person in charge controlling the environment which surrounds that skillfully, it is necessary to keep doing project management. For that after analyzing customer system, as customer side load with the customer-related phase, important matter definition, the basic design and system work verification is made to lighten, it examines sufficiently at planning how it improves productivity. With this manuscript after admitting the restriction, "weak system" it reports the case of the project which shortly actualizes payment date development, it verifies concerning the effectiveness of customer control.
