If the contracting officer receives a proposal with more restrictive conditions than those in the provision at FAR 52.215-1(e), then the contracting officer should ask whether the offeror is willing to accept the conditions of the paragraph at FAR 52.215-1(e). If the offeror refuses, then the contracting officer must consult with legal counsel before deciding whether to accept the proposal as marked or return it. See also FAR 3.104-4(d) and FAR 27.404-5.]