Section 17.805 - Solicitation provision and contract clauses(a) The contracting officer shall insert the provision at 52.217-10, Reverse Auction, in solicitations when using a reverse auction to award a contract or blanket purchase agreement.(b) The contracting officer shall insert the clause at 52.217-11, Reverse Auction-Orders, in solicitations and contracts for a multiple-award contract or blanket purchase agreement, when a reverse auction may be used to place orders under the basic contract or blanket purchase agreement.(c) The contracting officer shall insert the clause at 52.217-12, Reverse Auction Services, in all solicitations and contracts for the purchase of reverse auction services.