In this task, the requirements from previous/upper abstraction
level are refined and complemented to this abstraction level. This means that some assumptions on the design of this abstraction level are made. Typically the requirements introduced or refined in this work task are later refined and/or formalized
when the design has been made. For functional safety, the functional, technical, hardware or software safety
requirements are introduced in this work task and allocated to the design and detailed in later work tasks, thus
creating the functional/technical safety concept or being part of the hardware/software design. The refined and
introduced requirements are also validated. This means that the requirements
are checked to be consistent and corresponding to the actual expectations (intended requirements) of the
stakeholders.
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