Why is error: 400 occuring? 400 {'error': {'code': 'BadRequest', 'message': "'user@odata.bind' field is missing in the request.", 'innerError': ...

Question

    Here is a snippet of my code. Why is error 400 occuring:  ie  400  {'error': {'code': 'BadRequest', 'message': "'user@odata.bind' field is missing in the request.", 'innerError': {'date': '2024-11-13T22:20:30', 'request-id': '5675829f-5a', 'client-request-id': '567582a'}}} ? 

	# Create a new chat
    chat_payload = {
        "chatType": "oneOnOne",
        "members": [
            {
                "@odata.type": "#microsoft.graph.aadUserConversationMember",
                "roles": ["owner"],
                "user@odata.bind": "https://graph.microsoft.com/v1.0/me"
            },
            {
                "@odata.type": "#microsoft.graph.aadUserConversationMember",
                "roles": ["owner"],
                "user@odata.bind": f"https://graph.microsoft.com/v1.0/users{user_email}"
            }
        ]
    }
    # print("headers", headers, "chat payload",chat_payload)
    response = requests.post('https://graph.microsoft.com/v1.0/chats', headers=headers, json=chat_payload )

Answer

Hi Michael Wilcox,

Thank you for contacting Microsoft!

The error 400 with the message "'user@odata.bind' field is missing in the request" typically occurs due to an issue with the format or content of the request being sent.

It seems you might be trying to use {user_email} in the "user@odata.bind" field. Instead, please use the "Id" which can be fetched via the following endpoint: https://graph.microsoft.com/v1.0/users.

POST https://graph.microsoft.com/v1.0/chats
Content-Type: application/json

{
  "chatType": "oneOnOne",
  "members": [
    {
      "@odata.type": "#microsoft.graph.aadUserConversationMember",
      "roles": ["owner"],
      "user@odata.bind": "https://graph.microsoft.com/v1.0/users('8b0xxxxx-4792-4def-b2c9-c363a1xxxxxx')"
    },
    {
      "@odata.type": "#microsoft.graph.aadUserConversationMember",
      "roles": ["owner"],
      "user@odata.bind": "https://graph.microsoft.com/v1.0/users('82axxxxx-f7cc-4a2e-a728-3a5df2xxxxxx')"
    }
  ]
}

For more details on creating a one-on-one chat, please refer to the documentation here:

https://zcusa.951200.xyz/en-us/graph/api/chat-post?view=graph-rest-1.0&tabs=http

Hope this helps.

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Why is error: 400 occuring? 400 {'error': {'code': 'BadRequest', 'message': "'user@odata.bind' field is missing in the request.", 'innerError': ...

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