Service Systems are increasingly being utilized to keep pace with the changing environment and business requirements. Moreover, service requirement management is very significant for service workflow design. Managing requirement is one of the core activities in developing service systems. To identify proper requirements, business requirements and business change factors should be correctly analyzed since the ultimate aim which is to meet the needs of its stakeholders. Therefore, appropriate service requirements should be elicited from both the service providers and service consumers. In this paper, we propose a service requirements identification method using KANO Model and AHP for superior service workflow design.