Abstract
In recent years, highly functional product development complexity, which led to various requests received from various stakeholders. As a result, designers need to resolve more requests than ever before. There are some ambiguous requests included. Such a vague request originally been clarified by the designers and the stakeholders but they are not treated correctly. Because It is difficult to apply analytical methods to clarify such requests. In this paper the authors propose the procedure to analyze and how to represent this ambiguous requests using requirement model.
