The requirements for notifying, explaining, or debriefing offerors, i.e., successful and unsuccessful offeror can be found in the following Federal Acquisition Regulation (FAR) parts:

(1) FAR 8.405 (Ordering Procedures for the Federal Supply Schedules);

(2) FAR 12.301 (Solicitation Provisions);

(3) FAR 15.503 (Notifications to Unsuccessful Offerors);

(4) FAR 15.506 (Post-award Debrief of Offerors); and

(5) FAR 16.505 (Orders under multiple-award contracts)

An additional authority for providing post-award enhanced debriefing when working with the Department of Defense (DOD) is at DOD Class Deviation 2018-O0011.