For fear of having Gafusei come into effect, the powers to dispatch the pseudo envoys attempted to disturb the effectuation by catching the King of Japan envoy who had received Gafu in 1474 at Tsushima, or dispatching the pseudo Ojo-daijin envoys to Korea in 1480 to spread a false rumor that the Gafu were scattered.
偽使派遣勢力は牙符制の発効を恐れ、1474年の牙符発給を受けた日本国王使を対馬で一時拘束する、あるいは1480年に偽王城大臣使を朝鮮に派遣し、牙符が散逸したとする撹乱情報を伝えるなど、妨害を試みている。