Abstract
In the IT system development maintenance, analysis of user needs, the system impact study, study of how to fix the system, software Modification of the software, such as examination of test strategy, more expertise is required. In addition, to ensure the quality of the information system, Basic operations common across disciplines, such as the review of various artifacts is also very important. Once, by improving the quality of the review is a basic operation that is a department that had quality problems are frequently important and we achieved to improve quality and productivity. Then, to have been extinguished Efforts by developing a detailed rules when updating the system, instilling the basic operations such as reviews. However, quality problems occurs development and full-scale, from cases tried to catch up by re-thorough basic operation, I discuss the causes and remedies, and basic operation of such review is not established in a large-scale project.