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Power Apps
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Unable to add flow

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Posted on by 141

Hi, 

I face the issue. As I execute Stored Procedure to Power Automate. 

 

I am using the ID to return one record

The flow work fine and return no problem. (I'm using Execute stored Procedure (V2) and Response  flow)

but in Apps when I refresh the Power Automate. It cause the error. it say:

"Unable to add flow", "There was a problem adding your service. Please try again later." 

More: "The flow input and output schema cannot be represented in WADL.
code: FlowWadlConversionNotSupported"

I've tried look for solution and not able to find the right answer. 

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  • Verified answer
    Pstork1 Profile Picture
    68,717 Most Valuable Professional on at

    Are you using Respond to Power Apps or HTTP Response to return the value to Power apps?  This error is usually an indication that you are returning a complex object using Respond to Power Apps that contains values that are not simple data types.

  • spiderkzn Profile Picture
    141 on at

    Thank you for the reply Pstork1, 

    I'm using Response flow. See screenshot below. 

    spiderkzn_0-1653664156005.png

    The other flow I work return fine with many row of data. But this one I need return one data. 

     

  • Pstork1 Profile Picture
    68,717 Most Valuable Professional on at

    Are they both the same records?  If you are using HTTP response then the error normally indicates there is something wrong with the schema.

  • spiderkzn Profile Picture
    141 on at

    Hi pstork, 

    Thank you look like you are right 

    "Respond to Power Apps that contains values that are not simple data types." so I found there is no data type in Schema. as I have add the type and it working. 

  • dls Profile Picture
    17 on at

    I was having the same issue and in my case, the problem was the flow being disabled. I turned the flow ON and I was able to add the Flow to the App.

  • Satya123 Profile Picture
    Microsoft Employee on at

    Hello @Pstork1 , Could you please confirm if this is an expected behavior when the return output is of object type. We have tried Initializing a string variable in the flow and then sending the output of parse json to the variable and using the variable to return value to the canvas app.

  • Pstork1 Profile Picture
    68,717 Most Valuable Professional on at

    Using the Respond to Power Apps action you can send an object as a JSON string back to the Power App. The problem is that it is very difficult to then convert that string back into a JSON object. So although it can be done its not very useful.  There is a new ParseJson() function in Power apps, but it tends to output the results as untyped values that are difficult to use.  If you want to return an actual complex object or an array I would recommend sticking with the HTTP response action.

  • orlando_enrico Profile Picture
    6 on at

    Hello @Pstork1 
    I am using the "Respond to Power Apps" action and I am trying to send a string retrieved from a JSON back to a Canvas App. But I am not able to use this value on Power Apps. 

    This is the step that is returning the value:

    orlando_enrico_0-1686749210746.png

     

    I believe I should be able to store the return in a variable using the Set function. But I am not seeing the "url" option when I try to retrieve the value:

    orlando_enrico_2-1686749603872.png


    And if I try to modify the Flow I get the same error mentioned here: "There was a problem adding your service. Please try again later.".

    I already tried to return a string directly in the step instead of trying to retrieve from the JSON object but it didn't work either.
    And as @Satya123 mentioned we already tried to store the string in a variable to return but it also didn't work.

  • Pstork1 Profile Picture
    68,717 Most Valuable Professional on at

    Please post this as a new question.  You'll get more responses and others will be able to find the answer more easily later. If you send me a link to the new question I'll try to help you there.

  • orlando_enrico Profile Picture
    6 on at

    Here's the link to the new question:
    Retrieving data from a Flow / Updating Flow proble... - Power Platform Community (microsoft.com)

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