Ikoku keigobanyaku should have been served by Gokenin (an immediate vassal of the shogun in the Kamakura and Muromachi periods), who had their territories in Kyushu, but this service was later imposed on non-Gokenin groups of people, such as administrators of Koryo lands (belonged to the imperial courts) and Jishahonshoryo (lands that belonged to temples and shrines), who were not in the master-and-servant relationship with the shogunate at all, whether or not they resided in East part or West part of Japan, anticipating the Koan Warm
本来であれば九州に所領を持つ御家人がその任務にあたる性質のものであったが、後に弘安の役などを踏まえて東国・西国を問わずかつ公領や寺社本所領の荘官など鎌倉幕府との主従関係を有さない非御家人に対しても課された。