Abstract. Challenges that are hardly technical, have been reported to occur during enterprise architecture development. To address those caused by ineffective collaboration between architects and organisation stakeholders, we are developing a method referred to as Collaborative Evaluation of Enterprise Architecture Design Alternatives (CEADA). Our method aims at enabling effective execution of collaborative tasks during enterprise architecture creation. In earlier work, initial requirements for CEADA were defined and collaboration engineering was used to design a collaboration process for CEADA. Following design science research guidelines, the initial models (describing the requirements and the design of the collaboration process) were analytically evaluated using structured walkthroughs with enterprise architects. The models were then refined and analytically re-evaluated using structured walkthroughs with skilled facilitators and enterprise architects. This paper presents findings from the analytical re-evaluation of the refined model (describing only the requirements), and reports how it was further refined
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