The Mechanical System Requirements and Mechanical Component Requirements are specified. The Mechanical System Requirements and Mechanical Component Requirements are structured and prioritized. The Mechanical System Requirements and Mechanical Component Requirements are analyzed for correctness, verifiability, and technical feasibility. The impact of Mechanical System Requirements and Mechanical Component Requirements on the Operating Environment is analyzed. Consistency and bidirectional traceability are established between the Mechanical System Requirements and the Upper System Requirements and/or Upper System Architecture. Consistency and bidirectional traceability are established between the Mechanical Component Requirements and the Mechanical System Requirements and/or Mechanical System Architecture. The Mechanical System Requirements and Mechanical Component Requirements are agreed and communicated to all affected parties.