In the process of development, economic and military tensions, concerning the interests of kokuga and tato and fumyo classes from where most zaichokanjin originated, were involved and frequently armed conflicts broke out.
その過程においては国衙と在庁官人層の出自母体たる田堵負名層の権益などを巡る経済的、軍事的緊張と、それによる武力紛争の多発が大きく関わっていた。