Specifications
An RFP typically involves more than a request for the price. Other requested information may include basic corporate information and history, financial information (can the company deliver without risk of bankruptcy), technical capability (used on major procurements of services, where the item has not previously been made or where the requirement could be met by varying technical means), product information such as stock availability and estimated completion period, and customer references that can be checked to determine a company's suitability (including educational and military background of its employees on the project --- college graduates and those with advanced college degrees may add "value" from the bidder, as may an employee's military background as the contract).
In the militaries of many countries, an RFP is often raised to fulfill an Operational Requirement (OR), after which the military procurement authority will normally issue a detailed Technical Specification against which tenders (i.e., bids) will be made by potential contractors. In the civilian use, an RFP is usually part of a complex sales process, also known as enterprise sales.
RFPs often include specifications of the item, project or service for which a proposal is requested. The more detailed the specifications, the better the chances that the proposal provided will be accurate. Generally RFPs are sent to an approved supplier or vendor list.
The bidders return a proposal by a set date and time. Late proposals may or may not be considered, depending on the terms of the initial RFP. The proposals are used to evaluate the suitability as a supplier, vendor, or institutional partner. Typically organiazations follow a detailed vendor screening process to short list the vendors whom should be invited for further rounds of negotiation. This screening process could either be vendor scoring models or internal discussions within the buyer organization. Discussions may be held on the proposals (often to clarify technical capabilities or to note errors in a proposal or in many cases to negotiate on the price). In most instances, only selected bidders may be invited to participate in subsequent bids, or may be asked to submit their best technical and financial proposal, commonly referred to as a Best and Final Offer (BAFO). Subsequent changes can be referred to as the Best and Revised Final Offer (BARFO).
Once both the parties i.e. a buyer organization and seller organization agree on the technical and commercial terms and conditions of the proposal, they could move on to next steps like contract signing, statement of work which would formalize the purchase transactions.
Read more about this topic: Request For Proposal