For fuyu no ken to be recognized, it was necessary to apply for each rich field, but as desaku (an act in which farmers who live in a certain shoen cultivate lands of other)became common and the shoen side wished to include this as part of the land with fuyu no ken, a conflict arose with the Kokushi side, which wanted to stop this.
不輸が認められるには、個々の田地ごとに申請を必要としていたが、出作が盛んになるとともに不輸地の一部に含めようとする荘園側とこれを阻止しようとする国司側の間で紛争が生じるようになった。