request for proposals; RFP; invitation for bids
A formal business document used in procurement to solicit proposals from potential suppliers.
We issued a request for proposals for the introduction of a new system.
提案要請書には、必要な機能と予算が明記されている。
The required features and budget are clearly stated in the RFP.
見積依頼書 is a request for quotation (RFQ), typically used when requirements are clear and price is the main factor, while 提案要請書 (RFP) is used when the solution is not fully defined and proposals are evaluated on multiple criteria.
Compound of 提案 (proposal), 要請 (request), and 書 (document).