A collection of items that can include the following if such information is appropriate to the type of product and product component (e.g., material and manufacturing requirements may not be useful for product components associated with software services or processes):_x000D_

• Product architecture description_x000D_
• Allocated requirements_x000D_
• Product component descriptions_x000D_
• Product-related lifecycle process descriptions if not described as separate product components_x000D_
• Key product characteristics_x000D_
• Required physical characteristics and constraints_x000D_
• Interface requirements_x000D_
• Materials requirements (bills of material and material characteristics)_x000D_
• Fabrication and manufacturing requirements (for both the original equipment manufacturer and field support)_x000D_
• Verification criteria used to ensure requirements have been achieved_x000D_
• Conditions of use (environments) and operating/usage scenarios, modes and states for operations, support, training, manufacturing, disposal, and verifications throughout the life of the product_x000D_
• Rationale for decisions and characteristics (e.g., requirements, requirement allocations, and design choices).