Abstract
Architecture evaluation to confirm that the quality requirements were satisfied by the developed software architecture is one of the most important issues in architecture based software development approaches. Architecture Trade off Analysis Method (ATAM) is one such method, and the scenario-based quality requirement elicitation is an important factor for applying the method. We applied the method to factory-process-controlling systems with our industrial partner and this paper presents difficulties for quality requirement elicitation and a strategy to address these problems.