The engineering student of Universiti Teknikal Malaysia Melaka required writing business plan as one of the outcome of Technology Entrepreneurship course. This paper objective is to identify the factors that enable business plan simulation to help the student understanding on writing business plan especially in business process. We collected data by pre-and posttest questionnaire during the business plan simulation that run for 108 engineering students whose take the Technology Entrepreneurship course. The result showed that the experiential learning is the most significant factor followed by the perception by the student and the infrastructure provided. The other two factor (educator role and the content of the simulation) record no significant, but they needed as an input to run the business simulation.