However, their authority to collect taxes depended largely on their own political power, so when the power of the Kuge (court noble) Government decreased and samurai families made advances into ryoke-shiki (proprietorships), their influence weakened and with the exception of a few cases of maintaining all of their rights, the nobles were unable to control their land and stop it from falling into fuchigyo (losing land property).
ただし、その権限は自らの政治力に依存するところが大きく、中世に入り公家政権の政治力が低下し、領家職に武家が進出するようになると、直務支配が貫徹された一部を除いては次第に「不知行」化していく。