Getting Forbidden 403 error while creating OnlineMeeting using Microsoft Graph api - api

Question

I am trying to create online meeting through https://graph.microsoft.com/beta/communications/onlineMeetings .
initially i got the 403 Forbidden error. then i give the Delegated and Application permissions(OnlineMeetings.ReadWrite,OnlineMeetings.ReadWrite.All) on my registered app on azure.then 403 error is gone and i got new error 400 bad request(Organizer.Identity.User.Id missing).
then i supply Online meeting post request as follows-:
{
"startDateTime":"2020-04-20T14:33:30.8546353-07:00",
"endDateTime":"2020-04-20T15:03:30.8566356-07:00",
"subject":"Application Token Meeting",
"participants": {
"organizer": {
"identity": {
"user": {
"id": "cb6d6636-1c9e-457c-b904-5da8265a8927"
}
}
}
}
}
again i got 403 Forbidden error.
i created user with the help of https://graph.microsoft.com/v1.0/users and https://graph.microsoft.com/beta/invitations.
user is created in my app on azure and i give the permission (User.ReadWrite.All, Directory.ReadWrite.All, Directory.AccessAsUser.All,User.ReadWrite.All, Directory.ReadWrite.All)
but error(403) did not change.
My question is that how to give user authorization in microsoft graph API.

Answer 1

The required permission is Delegated Permission: OnlineMeetings.ReadWrite. See reference here.
403 error means your access token doesn't include the required permission. You can add it like this:
Don't forget to click on "Grant admin consent for {your tenant}".
You should implement Get access on behalf of a user and get an access token to call /communications/onlineMeetings endpoint.
The http sample for your reference:
POST https://graph.microsoft.com/beta/communications/onlineMeetings
Content-Type: application/json
Authorization: Bearer {access token}
{
"startDateTime":"2019-09-09T14:33:30.8546353-07:00",
"endDateTime":"2019-09-09T15:03:30.8566356-07:00",
"subject":"Application Token Meeting",
"participants": {
"organizer": {
"identity": {
"user": {
"id": "550fae72-d251-43ec-868c-373732c2704f"
}
}
}
}
}
You can learn more details about Use the access token to call Microsoft Graph. Don't forget to put Authorization: Bearer {access token} in the request headers.