Read the document to learn which one you have. Suppliers mostly see the first meaning. Contractors on public work often see the second.
A contractor sends a request for quote to a supplier with a material list. A casework sub might ask three laminate suppliers for sheet pricing.
An owner sends a request for qualifications to make a short list. Only short-listed firms then receive the RFP.
For a quote request, send a clear list with quantities, units and the spec section. For a qualifications request, follow the required format exactly.