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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(198.4, 39%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAB%3C/text%3E%3C/svg%3E)
array(1) {
["error"]=>
array(3) {
["code"]=>
string(12) "Unauthorized"
["message"]=>
string(12) "Unauthorized"
["innerError"]=>
array(3) {
["date"]=>
string(19) "2021-06-30T09:58:22"
["request-id"]=>
string(36) "6f7eae28-fefe-43a5-a5cf-51f6eb396ae9"
["client-request-id"]=>
string(36) "6f7eae28-fefe-43a5-a5cf-51f6eb396ae9"
}
}
}
![](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(249.60000000000002, 4%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EHH%3C/text%3E%3C/svg%3E)
Hello,
Can you please describe your issue in details?
If you are trying to do it with graph. You can use Send chatMessage in channel only.
I see that you are already aware about the API. So, are you trying to do this from Graph Explorer?
Thanks
Hello,
Please let us know if you are still facing this issue. We are closing this at our end.
Thanks
Your answer is not correct. Please see https://learn.microsoft.com/en-us/graph/api/channel-post-messages?view=graph-rest-1.0&tabs=http
Kind regards,
Alex
Try the above API call in delegated permission scenario which will work. If you try with application permission scenario, then it's not supported. Here's the documentation for it.