Meetings created with API not showed in calendar ... why ?

[k26]

Hello I have posted some new meeting with the API / POST
I can clearly see it in the Meeting menu and in notifications, but the calendar does not show the event.... why ?
When I create an event in the calendar, in direct mode, I can clearly see it both in Calendar and in Meeting.
What am I missing ?
Thanks for your help

[k26]

arf, found the solution ! I need to fill the attendees !