Forum Discussion
Issue with Teams 'Add a User to Group Chat' API call?
MicrosoftHello AutomatonSolutionsRDE,
The request fails due to two issues: first, the @odata.type value was misspelled, causing Microsoft Graph to stop processing and return a misleading schema error. Second, an incorrect property was used instead of user@odata.bind. Correcting both issues resolves the problem. The proper request body must include the correct @odata.type, roles array, and the user@odata.bind reference to the target user.
{
"@odata.type": "#microsoft.graph.aadUserConversationMember",
"roles": [],
"user@odata.bind": "https://graph.microsoft.com/v1.0/users('USER_ID')"
}
Sayali, this is not correct. There's nothing wrong with my API call, it's following the exact format you would expect. You are looking at artifacts of my copy/paste, but the API call follows the exact format in the documentation.
https://graph.microsoft.com/v1.0/chats/[[THREAD_ID]]/members
BODY:{
"chatType": "group",
"\u0040odata.type": "#microsoft.graph.aadUserConversationMember",
"user\u0040odata.bind": "https://graph.microsoft.com/v1.0/users/[[USER_ID]]",
"roles": []
}
Incorrect. You are referring to changes I made to the post for security reasons. Here is a screenshot of the call being made:
This exactly follows the convention in the documentation. Why isn't it working? (https://learn.microsoft.com/en-us/graph/api/chat-post-members?view=graph-rest-1.0&tabs=http)
Please don't just ask an AI. The AIs all say the same identical thing and they're wrong. Can anyone ACTUALLY explain this?
Error Message:
{"error":{"code":"BadRequest","message":"The provided '#microsoft.graph.aadUserConversationMember' for 'odata.type' is not valid for this operation.","innerError":{"date":"2026-02-10T17:59:50","request-id":"7b28c192-7906-40b1-94d7-dd3abb5577c3","client-request-id":"7b28c192-7906-40b1-94d7-dd3abb5577c3"}}}Sayali, this is not correct. Apologies that my initial report was not more clear. This is the exact API call being sent, as you can see; the issues you pointed out are not present in the actual API call. it's following the correct format.
Response body:
{"error":{"code":"BadRequest","message":"The provided '#microsoft.graph.aadUserConversationMember' for 'odata.type' is not valid for this operation.","innerError":{"date":"2026-01-29T14:56:25","request-id":"8ef444c8-64e3-45db-80d4-2c0ea9e47902","client-request-id":"8ef444c8-64e3-45db-80d4-2c0ea9e47902"}}}
PPlease advise.
