Federation Survey Team was a Federation research group operated by Starfleet that surveyed and examined planets. One of its goals was to determine the suitability of a world for Federation membership.
Following the planet Treva's preliminary petition for membership to the Federation Council in 2349, a Federation Survey Team made a preliminary survey of the world. It approved a full-scale investigation that would allow Treva make a proper membership application. However, Treva never submitted the follow-up request for the investigation, leaving the matter undecided. The reports gave no mention about Treva's police or armed forces. (TNG novel: Survivors)