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E-mail > Teams Post > Acknowledge > Flow > Push

To outline what is happening (or what I want to):

  1. E-mail is received in folder
  2. Flow posts message card to specific channel in Teams
  3. Card has an action button that is used to alert management it was picked up
  4. Acknolwedgement is sent back to flow
  5. Communication sent back in some platform, e.g., text, e-mail or push.


I've got the 1, 2, and 5 setup, but struggling on 3. I tried doing an HTTP Post back to Flow's URL, but I get an "HTTP Unauthorized" error. How can I overcome this, and is it possible to simply have an action button that captures the user's name that clicks it to be sent off with the HTTP Post?


Here's my JSON so far with some elements stripped out:


"@type": "ActionCard",
"@context": "",
"themeColor": "0076D7",
"summary": "New Critical Case Submitted to Group",
"sections": [
"activityTitle": "New Critical Case Submitted to Group",
"activitySubtitle": "Please reply to @Support (O365 Group) when you've assigned yourself the case",
"activityImage": "IMAGE",
"facts": [
"name": "Subject:",
"value": "Test"
"name": "Details: ",
"value": "Test2"
"markdown": true
"potentialAction": [
"@type": "ActionCard",
"name": "I got it",
"inputs": [
"@type": "TextInput",
"id": "assigneeName",
"title": "Enter Your Name"
"actions": [
"@type": "HttpPOST",
"name": "OK",
"target": "FLOWURL"

Community Support
Community Support

Hi @mwinner,


The HTTP unauthorized client error status response code indicates that the request has not been applied because it lacks valid authentication credentials for the target resource.

Please make sure your JSON contains required elements.

Besides, please check the following blog on how to fix unauthorized error at here:


Best regards,


Community Support Team _ Mabel Mao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

I can make the same call with Postman without issue, but Teams fails. What exactly am I missing in my JSON?

@v-yamao-msft Any input on my previous ask?

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