Later the system of Sanni became a mere façade and lost the importance of existence, and in 896 it was incorporated in Shikibu-sho and after that the office work in Sanni was done in Shikibu-sho.
のちに散位制度が形骸化すると存在意義が薄れ寛平八年（896年）式部省に併合され､以後散位の事務も式部省で行われた。