Ошибка 4. При создании рейса через API

Создаю в следующей последовательности объекты:
Маршрут, Расписание, Рейс

На рейсе ошибка:4
В чем ошибка?

СОЗДАЮ МАРШРУТ
ЗАПРОС:
svc=core/create_route&params={"creatorId":20744703, "name":"Isuzu (Авдеев) 2020-03-02 (0000)","dataFlags":1}&sid=0233fd6a0c8a07205e193eb28b7301f3
ОТВЕТ:
{"item":{"nm":"Isuzu (Авдеев) 2020-03-02 (0000)","cls":6,"id":20745227,"mu":0,"uacl":1114111},"flags":1}

СОЗДАЮ РАСПИСАНИЕ
ЗАПРОС:
svc=route/update_schedule&params={"itemId":20745227,"id":0,"callMode":"create","n":"Дневное","f":2,"tz":134232128,"u":0,"tm":[{"at":0,"ad":86340,"dt":0,"dd":86340},{"at":0,"ad":86340,"dt":0,"dd":86340},{"at":0,"ad":86340,"dt":0,"dd":86340},{"at":0,"ad":86340,"dt":0,"dd":86340},{"at":0,"ad":86340,"dt":0,"dd":86340},{"at":0,"ad":86340,"dt":0,"dd":86340},{"at":0,"ad":86340,"dt":0,"dd":86340},{"at":0,"ad":86340,"dt":0,"dd":86340},{"at":0,"ad":86340,"dt":0,"dd":86340},{"at":0,"ad":86340,"dt":0,"dd":86340},{"at":0,"ad":86340,"dt":0,"dd":86340},{"at":0,"ad":86340,"dt":0,"dd":86340}],"sch":{"f1":0,"f2":0,"t1":0,"t2":0,"m":0,"y":0,"w":0},"cfg":{"name":"name","units":[],"enabled":0,"roundFlags":64,"autoName":1,"validityPeriod":86400}}&sid=0233fd6a0c8a07205e193eb28b7301f3
ОТВЕТ:
[1,{"id":1,"n":"Дневное","f":2,"tz":134232128,"cfg":{"autoName":1,"enabled":0,"name":"name","roundFlags":64,"units":[],"validityPeriod":86400},"tm":[],"sch":{"f1":0,"f2":0,"t1":0,"t2":0,"m":0,"y":0,"w":0,"fl":0}}]

СОЗДАЮ РЕЙС
ЗАПРОС:
svc=route/update_round&params={"n":"Isuzu (Авдеев)02.03.2020","d":"","u":866795035281276,"at":1583107200,"vt":1583107200,"vp":86400,"sh":1,"cu":[],"f":64,"tz":134232128,"itemId":20745227,"id":0,"callMode":"create"}&sid=0233fd6a0c8a07205e193eb28b7301f3
ОТВЕТ:
{"error":4}