4,144 questions
I checked the issue is the teamId u r using does not have the channel you have specified. Use list channels API to figure out the right channelId
Posting channel message to Teams facing 400 Bad Request
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Tamas Fazekas
21
Reputation points
Hi!
When I am trying to POST a message to /teams/{team-id}/channels/{channel-id}/messages I am facing a 400 Bad Request. During implementation I was following the steps described in Send chatMessage in a channel or a chat The message is posted to Teams however the response is 400 with no specific error message. I've tried in several environments and only this is not working. I don't have any clue how should I solve the issue.
Please check my request below.
{
"error": {
"code": "BadRequest",
"message": "Bad Request",
"innerError": {
"date": "2022-01-20T11:49:37",
"request-id": "63d8b596-b4a4-429f-b377-aa41a90ec682",
"client-request-id": "63d8b596-b4a4-429f-b377-aa41a90ec682"
}
}
}
Thanks in advance!
Microsoft Teams | Development
Microsoft Security | Microsoft Graph
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(112.00000000000001, 24%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJM%3C/text%3E%3C/svg%3E)
JimmyYang-MSFT 58,641 Reputation points Microsoft External Staff2022-01-21T00:34:57.16+00:00 Teams tag is mainly focused on the general issue of Microsoft Teams troubleshooting. According to your description, your question is more related to Teams API development, which is not in our support scope. So I will add office-teams-app-dev tag to your thread. Thanks for your understanding and patience!
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(160, 48%, 25%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESM%3C/text%3E%3C/svg%3E)
Sayali-MSFT 3,991 Reputation points Microsoft External Staff Moderator2022-01-21T07:12:59.237+00:00 @Tamas Fazekas - We are looking into this I will get back to you soon.
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Sayali-MSFT 3,991 Reputation points Microsoft External Staff Moderator
2022-01-21T07:37:06.313+00:00 @Tamas Fazekas - I tried to repro the scenario , It's working fine from our end. Could you please check the Team Id and channel id.
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Accepted answer
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(44.800000000000004, 66%, 14%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERS%3C/text%3E%3C/svg%3E)
Ramjot Singh 861 Reputation points Microsoft Employee2022-01-21T09:46:59.17+00:00 -
Tamas Fazekas 21 Reputation points
2022-01-21T10:15:42.973+00:00 Hi @Ramjot Singh ,
I managed to post it with listing joined teams and the channels for that team.
I will modify the channelId and teamId in my environment.
Is it possible that the channel was moved to another team, renamed or recreated with the same name and therefore the message was posted but something broke?Anyway the issue is resolved so thank you for your time!
Wish you the best,
Tamas -
Ramjot Singh 861 Reputation points Microsoft Employee
2022-01-21T10:19:33.787+00:00 Channels cant be moved. They can however be renamed and 2 channels across 2 teams can definitely have same name.
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2 additional answers
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CarlZhao-MSFT 46,376 Reputation points2022-01-21T08:37:07.68+00:00 First you have to make sure you are in the team before you can send messages to the team. You can use the Graph Explorer tool for a quick test.
Also, by the way, sending messages doesn't support application permissions.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
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Tamas Fazekas 21 Reputation points
2022-01-21T08:47:15.387+00:00 @Sayali-MSFT
@CarlZhao-MSFT
Thank you for your response.
The message is posted to Teams, however the request comes back with 400 which should mean that the Team Id and the Channel Id is fine.-
CarlZhao-MSFT 46,376 Reputation points
2022-01-21T09:24:59.737+00:00 @Tamas Fazekas You mean the message is sent fine, but a status code of 400 is returned? Can you test with the Graph Explorer tool and provide a screenshot?
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Tamas Fazekas 21 Reputation points
2022-01-21T09:52:24.167+00:00 Yes, the message is posted to the channel however 400 is returned.
I cannot reproduce it in Graph Explorer because despite the fact that my permissions are consented I am facing a 403.
Please note that I am acquiring the access token using delegated authorization flow in my application and only managed to reproduce it in one environment, the other two are fine.
Response:
{ "error": { "code": "Forbidden", "message": "Forbidden", "innerError": { "date": "2022-01-21T09:41:55", "request-id": "0f00615b-bf2b-46b9-920c-c45878a43ea4", "client-request-id": "647c5410-e3c4-52d7-0454-7f5d26feb23f" } } }
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