S.C. Code Ann. § 11-35-1530
(4) Request for Qualifications. Prior to soliciting proposals, the procuring agency, acting through the authorized procurement officer, may issue a request for qualifications from prospective offerors. Such request shall contain at a minimum a description of the goods or services to be solicited by the request for proposals and the general scope of the work and shall state the deadline for submission of information and how prospective offerors may apply for consideration. The request shall require information only on their qualifications, experience, and ability to perform the requirements of the contract.
After receipt of the responses to the request for qualifications from prospective offerors, the perspective offerors shall be ranked from most qualified to least qualified on the basis of the information provided. Proposals shall then be solicited from at least the top two prospective offerors by means of a request for proposals. The failure of a prospective offeror to be selected to receive the request for proposals shall not be grounds for protest under Section 11-35-4210.
(8) Negotiations. Whether price was an evaluation factor or not, the procuring agency, through the appropriate procurement official, may, in its sole discretion and not subject to challenge through a protest filed under Section 11-35-4210, proceed in any of the manners indicated below:
(d) if, after following the procedures set forth in Section 11-35-1530(8), a contract is not able to be negotiated, the scope of the request for proposals may be changed in an effort to reduce the cost to a fair and reasonable amount, and all responsive offerors must be allowed to submit their best and final offers.
In conducting negotiations, there must be no disclosure of any confidential information derived from proposals and negotiations submitted by competing offerors.