RFP

Request for Proposal (RFP)
An RFP, or request for proposal, is a document used by a business to ask another company for more details about a product or service.
The main difference between RFP and RFQ is that an RFQ is sent when a business already knows what they want to purchase and only needs more information about the price, and an RFP is sent when a business needs more detailed information about the product or service itself.
(https://mailchimp.com/resources/rfq-vs-rfp/)