"...however, the engineering requirements..."
DOORS, and the associated Requirements Traceability, >>>AS IMPLEMENTED<<< by the usual PMP suspects, has set back humanity by about ten years per decade.
We'd have been on Mars by now if they'd restrict such onerous processes to *only* those >>>relatively<<< few requirements that are directly tied to Safety (perhaps 5% of the usual Requirements Traceability loadng).
If the spacecraft had curtains, the mindless PMP-imposed Requirements Management of the colour of the curtains would cost $10M. They'd demand formal testing to ensure the colour precisely matched the unnecessary overly-precise specification. There would be a 40-page report. They'd have to redo it because the calibration of the lighting was calibrated by an unapproved lab. They'd delay the launch for a year to recheck the colour of the curtains.
If you disagree, then you're just wrong. You've not seen it first hand.