This decree was not implemented uniformly but practiced flexibly very much, and when it came to a large scale domain, families or vassals of high rank or income were the substantial castle owners and, in fact, there were some examples that some of them kept several castles.
この法制は画一的に実施されたわけではなく、大藩では大身の一門や家臣が実質上の城を持ち、現実には複数の城を維持している例も見られ、かなり弾力的に運用された。