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Power Automate - Using Flows
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HTTP Post Failing - Works in Postman

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Posted on by 3

I have a flow that is failing in Power Automate, but works in Postman and any native code. Below is a screenshot of the raw inputs for the flow.

jpshank2_0-1619557944195.png

The output of this says, "Processing of the HTTP request resulted in an exception. Please see the HTTP response returned by the 'Response' property of this exception for details."

There is no 'Response' property of the output as seen in the below screenshot.

jpshank2_1-1619558547774.png

However, when I do the same post request in Postman it works like a charm. Below are screenshots of the generated code (JS with the FetchAPI) from Postman and the response.

jpshank2_2-1619559166402.pngjpshank2_3-1619559211232.png

 

 

I have tried parsing the body with json, but get a parsing error when I do so. Any help is appreciated with this, it is driving me to my last shred of sanity.

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  • rrovira Profile Picture
    Microsoft Employee on at
    Re: HTTP Post Failing - Works in Postman

    Hello, @jpshank2!

     

    Yes, I see you are getting a "400" status code which means the argument is invalid, however, as you mentioned it works with the same data using Postman so I don't really see the issue. Perhaps you need to open a ticket with customer support to handle this issue directly (here is how to do it: https://docs.microsoft.com/en-us/power-platform/admin/get-help-support). 

     

    I would also recommend you double checking your header to make sure everything is set up correctly, if you need more information on how to compose an HTTP request, here's a link to the documentation: Compose HTTP requests and handle errors (Microsoft Dataverse) - Power Apps | Microsoft Docs.

     

    Cheers,

    Rodrigo

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