Adding User to Group using Graph API B2C - azure

Question

I am using Azure AD B2C to create users.
After a user is created I would like to add them to a Group
Using Postman I have made the following request (with access token in the header). Note: I have managed to successfully create a group using the Api.
POST
https://graph.windows.net/{azure-tenant}/groups/{group-objectId/members/$ref?api-version=1.6
With Body:
{
"#odata.id": "https://graph.windows.net/{azure-tenant}/directoryObjects/{user-objectId}"
}
Which is what the documentation specifies. No matter the body that is sent I get the following error
{
"odata.error": {
"code": "Request_BadRequest",
"message": {
"lang": "en",
"value": "The request URI is not valid. Since the segment 'members' refers to a collection, this must be the last segment in the request URI. All intermediate segments must refer to a single resource."
},
"requestId": "48cf65f3-20ba-411e-8121-f7ea54252f3a",
"date": "2019-05-27T06:09:25"
}
}
I tried removing the /$ref
POST
https://graph.windows.net/{azure-tenant}/groups/{group-objectId/members?api-version=1.6
Body:
{
"#odata.id": "https://graph.windows.net/{azure-tenant}/directoryObjects/{user-objectId}"
}
as well as
{
"#odata.id": "https://graph.windows.net/{azure-tenant}/users/{user-objectId}"
}
Now the error that gets returned now is:
{
"odata.error": {
"code": "Request_BadRequest",
"message": {
"lang": "en",
"value": "Unsupported resource type 'DirectoryObject' for operation 'Create'."
},
"requestId": "2c36cc6d-383c-44f8-8609-2ac3e3efc862",
"date": "2019-05-27T06:15:26"
}
}
The documentation that I have been using https://learn.microsoft.com/en-us/graph/api/group-post-members?view=graph-rest-1.0&tabs=javascript

Answer 1

You are using graph.windows.net endpoint, so you should refer to azure ad graph api.
POST https://graph.windows.net/myorganization/groups/b4bda672-1fba-4711-8fb1-5383c40b2c14/$links/members?api-version=1.6
{
"url": "https://graph.windows.net/myorganization/directoryObjects/3eb6055a-baeb-44d4-a1ea-2fee86d8891b"
}
The document you referred to is microsoft graph api. The endpoint should be https://graph.microsoft.com.
You can use Microsoft Graph explorer to call these apis.