Precondition Failed error 412 when trying to create chats for a users to have one to one chat using Microsoft Graph REST API

Question

I am getting the following error while trying "https://graph.microsoft.com/v1.0/chats" this Microsoft Graph API.

'{

"error": {  

    "code": "PreconditionFailed",  

    "message": "Requested API is not supported in application-only context",  

    "innerError": {  

        "date": "2021-06-29T07:17:55",  

        "request-id": "1d580324-d584-453e-93b9-352c41c23ae0",  

        "client-request-id": "1d580324-d584-453e-93b9-352c41c23ae0"  

    }  

}  

}'

As I have added the JSON in body of request as below:-

{
"chatType": "oneOnOne",
"members": [
{
"@odata.type": "#microsoft.graph.aadUserConversationMember",
"roles": "",
"@odata.bind": "https://graph.microsoft.com/v1.0/users/3218324a-82a0-44b5-b0cb-34adbbc51fc7"
},
{
"@odata.type": "#microsoft.graph.aadUserConversationMember",
"roles": "owner",
"@odata.bind": "https://graph.microsoft.com/v1.0/users/54b11e04-5612-4716-8777-a540977b636e"
}
]
}

]1

Please help me on this, I need to validate Create chat API in Postman.

Answer 1

As your error message says, creating chat does not support application-only context for the time being, it currently only supports user context.

So you need to grant Chat.Create delegation permission for your application, and then you need to use the auth code flow with user participation to get the access token, and then you will be able to use the user token to call the /chats api endpoint to create chats for the user .

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