Hi,
Thanks for reply. One of a buyer from my company asks me to run an auction with such functionality. He says that his suppliers place the wrong bids. Also, he really wants to run the auction (due to some internal competition in the company). I advised him to do RFP instead of auction and explained that any functionality will not prevent the supplier from placing the wrong bid. However, the buyer really insists. So I am wondering, is there any possibility to run auction and let supplier to place the bid only once?