A knowledge life cycle has several knowledge management (KM) processes that differ from one model to another. Exploration and utilization of these processes on high levels require mapping them to the core business processes in an organization. A business process architecture (BPA) identifies these core processes and highlights their relationships. Riva method is a BPA approach that allows characterizing these key processes using essential business entities (EBEs). It also proposes a few steps to develop an organization's overall business process architecture (BPA). Matching the appropriate knowledge management (KM) processes to these steps clarifies KM’s role in business process modeling. In addition, it contributes to discovering gaps and developing business process modeling (BPM). The Riva-based Knowledge Life Cycle (KLC) model has been suggested to map KM processes to Riva BPA steps.