1. Blue Prism Portal Documentation, Robotic Operating Model (ROM) v2, The Delivery Lifecycle: The official methodology outlines the "Build" phase as the third stage. It is explicitly defined as: "The automated solution is built in the Blue Prism development environment, based on the PDD and SDD. The build is carried out by a developer with Blue Prism accreditation." This directly confirms that "Build" is the development of the process.
2. Blue Prism - Delivery Roadmap (within ROM documentation): This resource details the key inputs, activities, and outputs for each stage. For the "Build" stage (often labeled as "Configure & Unit Test"), the key activity is listed as "Configure the solution," reinforcing that this is the development phase. The input is the SDD (from the Design stage), and the output is the configured solution ready for the Test stage.