Heavy deadlifts, loaded carries and repeated lumbar flexion under fatigue are the usual aggravators when sciatic symptoms are active. RepRoute's injury map has no sciatica entry — flag the lower back instead. That's the tag the exercise catalogue carries.
What that flag does: every exercise tagged lower_back is REMOVED from your plan. In the catalogue that's every hip-hinge, every loaded carry, and every core pattern — flexion, anti-extension and anti-rotation. Planks and Pallof presses go along with the sit-ups; the tag doesn't distinguish between them.
Emptied days are refilled with up to three exercises from what's still legal — squats, presses, rows. There's no depth cap, no load reduction, no intermediate step. The engine removes or it doesn't.
Sciatic symptoms are a clinical matter before they're a programming one. Shooting leg pain, numbness, weakness or any loss of bladder control are red flags — see someone. RepRoute is a planning tool and makes no claim to be anything else.