The tournament will be played at the ANZ Stadium in Suva, with match days on 8, 12 and 17 March with the final on 21 March.
Four teams will take part in the round-robin competition. Hosts Fiji Warriors will be joined by their island neighbours Tonga A and Samoa A along with Junior Japan.
World Rugby Chairman Bernard Lapasset said: "The Pacific Challenge is a key developmental tournament, which creates a quality competition pathway for our high performance investment unions.