Planning, managing, and maintaining the evolution of the application landscape is a focal point of enterprise architecture (EA) management. Whereas, planning the evolution of business support provided by the business applications is understood as one challenge to be addressed in landscape management, another challenge arises in the context of traceability of management decisions. This article discusses the requirements regarding support for landscape management as risen by practitioners from industry, gathered in an extensive survey during which the tool support for EA management was analyzed. Thereby, a lack of support for this management discipline was discovered, which is caused by the way, application landscapes are modeled in tools. We subsequently discuss how to incorporate these requirements into an information model.