When tozama daimyo and fudai daimyo were stationed in the same province, the fudai daimyo were not required to stay in Edo under the sankin kotai system (the alternate residence system), but instead had to remain at their residence (in their hometown).
外様大名が置かれているときは、同じ国内にいる譜代大名は、参勤交代で、同時に江戸表には在府させず、必ず在所（国許）に残る譜代大名を置いた。