Why is documenting requirements systematically important in requirements engineering?

Documenting requirements systematically is essential in requirements engineering because it facilitates the ability to cover requirements appropriately through test cases. When requirements are well-documented, it becomes easier to establish clear connections between the specified requirements and the corresponding test cases designed to verify those requirements. This systematic documentation allows teams to ensure that all outlined requirements are accounted for during the testing process, ultimately supporting the verification and validation of the system.

In the absence of documented requirements, it can be challenging to identify whether all aspects of the project have been addressed in testing. This could result in overlooked requirements and unverified functionalities, leading to potential gaps in the system's performance or quality. The systematic documentation serves as a reference point that aids in traceability, ensuring that each requirement can be traced through to the relevant tests, providing a robust framework for quality assurance.