What's the difference between negotiated and negotiation required?

Negotiated means the purchasing terms (prices, terms, conditions, quantity, and so on) for a requisition line that are already negotiated with the supplier.

You select the option on a requisition line to support automated purchase order creation from the requisition, without the need for a previously negotiated blanket or contract purchase agreement.

Negotiation Required means that further negotiation with the supplier is required to determine the purchasing terms. You should complete the negotiation process before you create the purchase order. From the Process Requisition page, you can create the negotiation document with the requisition line information. Alternatively, you can negotiate purchasing terms offline, and process the requisition line into a purchase order without having a formal negotiation. The application provides a warning that you are bypassing the formal negotiation process, but you can continue.