A Request for Proposals (RFP) from the Minnesota Department of Commerce is a formal invitation to potential contractors or grantees to submit a proposal. A Request for Proposal (RFP) is a formal invitation to potential contractors or grantees to submit a proposal.Fill out the form below and hit the "submit" button. After you submit form data, a copy of the Request For Proposal will appear. The MDA is requesting proposals for directing fertilizer research and outreach programs. Format of Proposals and Submission. Step 5: Complete and submit all proposal content through a secure online portal. Hard copy originals ranging in size from 3x5 up to 20x30 inches. VIII. Sheltered Market Pilot Project Request for Proposals. This Sheltered Market procurement is issued under the authority designated in Minnesota Statute §16C.