Task: ENG.4.BP6: Ensure consistency and bilateral traceability of system requirements to software requirements.
Ensure consistency of system requirements including verification criteria to software requirements including verification criteria. Consistency is supported by establishing and maintaining bilateral traceability between the system requirements including verification criteria and software requirements including verification criteria.
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    NOTE 6: In case of software development only, the system requirements and system architectural design refer to a given operating environment (see also NOTE 4). In that case, consistency and bilateral traceability will be of customer requirements to software requirements.

    NOTE 4: The operating environment is defined as the system that the software works in (e.g. hardware, operating system, etc.).

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