Buys an existing product from the catalogue.
Price, quantity and lead time are already defined.
The brief is routed to suppliers able to produce it.
Each supplier interprets the brief, asks for what is missing and prices the job.
Both paths converged into the same structure, built years earlier.
A catalogue order arrives at checkout with almost nothing agreed. A customised order arrives carrying a full specification, a negotiated price and a named supplier. The product treated both as the same purchase.