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Power Platform Community / Forums / Power Automate / invoke web services error
Power Automate
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invoke web services error

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Posted on by TN-20081510-0 52
 
   >> Who can trigger the flow is set to Anyone .
{"error":{"code":"DirectApiAuthorizationRequired","message":"The request must be authenticated only by Shared Access scheme."}} .
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Power Automate Desktop
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  • Suggested answer
    SwatiSTW Profile Picture
    SwatiSTW 809 Super User 2026 Season 1 on at
    When the trigger is set to "Anyone", the flow requires authentication via a Shared Access Signature, which is already part of the URL in the sig parameter
    Try below steps which should resolve issue
    1. Use Full URL in PAD - Ensure the complete URL, including the sig parameter, is used in the Invoke Web Service action.
    Example format:
    https://prod-130.westus.logic.azure.com/.../invoke?...&sig=XXXXXXXXXXXXXXX
    2. Configure Invoke Web Service in PAD - 
    Set Method to POST.
    Paste the complete URL in the URL field.
    Set Header to Content-Type: application/json (if required).
    Ensure Proper Payload (if needed):
    3. Match the request body with the expected JSON format of the flow.
    4. Re-run the Action - Test the Invoke Web Service action in PAD to see if it works correctly.
  • TN-20081510-0 Profile Picture
    TN-20081510-0 52 on at
    When i enter full URL in PAD, it says invalid and throws an error.
  • SwatiSTW Profile Picture
    SwatiSTW 809 Super User 2026 Season 1 on at
    can you share screenshot of it

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