Unable to send Chat message to a channel or chat with Graph API, thrwos an error.

Question

Hello there,

found similar issue here : https://learn.microsoft.com/en-us/answers/questions/568047/graph-rest-api-to-send-a-message-to-a-teams-channe.html
As @CarlZhao-MSFT suggested I used a Work/School account. But issue still persists. I have asked my Admin to Enable Permissions. But they could not enable it.

I have logged in with Work Account but still getting the same response. Could you please provide steps to enable these permissions? Or any other help I would be appreciate. Thanks much!

PS. Note : I am trying to use these APIs via Tray.io Integration Tool attached Screenshots please refer.

{
"error": {
"code": "InternalServerError",
"message": "Unable to find target address",
"innerError": {
"date": "2022-05-11T09:00:47",
"request-id": "e735d22d-e788-469d-afbc-954f6f60e840",
"client-request-id": "e86da880-ff14-de48-f2e6-15c94fa02a60"
}
}
}

Answer 1

Hi @Vijaykanth

First grant your application the ChannelMessage.Send delegated permission.

Go to the Azure AD portal and log in with the global administrator>App registrations>your app>API permissions>Add a permission.

Then use the auth code flow to get the access token:

1.Run the URL in the browser and log in with your work account to get the authorization code.

https://login.microsoftonline.com/{tenant id}/oauth2/v2.0/authorize?  
client_id={client id}  
&response_type=code  
&redirect_uri={redirect url}  
&response_mode=query  
&scope=ChannelMessage.Send  
&state=12345  

2.Redeem an access token with your authorization code in postman.

Finally use the token to call the graph api endpoint to send the message.

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