The Deep Space Corps Selection Board was a group of Starfleet senior officers in the Starfleet Deep Space Exploratory Corps. This board considered the eligibility of in-the-zone or above-the-zone promotion of an officer.
This board was mentioned in Regulation 02-0933-3462F. (TNG: "The Measure Of A Man", okudagram)
This board was mentioned in the extended version of "The Measure Of A Man".