How do I disagree after a decision is final?

Say you are committed in the first sentence, then name the single risk that could change the outcome and the point at which you will know. Ask for a check at that point rather than a review of the decision. When the decision-maker hears a condition instead of an objection, the usual reply is a date, not a defence. Keep it short and flat in tone: the calmer the flag, the more likely it is to be logged.

If the answer is that the decision stands, ask for the risk to be recorded as an accepted risk, with an owner and a review date. That converts a refused objection into a logged assumption, and it gives you a reason to come back with evidence rather than an opinion. Bring one number with you: a date, a cost, a delivery time.

Disagreeing in English With a Decision That Has Already Been Made →