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Session Id : /XH+UIMqpN3VYYJJpSqoBo
Power Apps - Building Power Apps
Answered

Unable to add flow

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Posted on 3 May 2022 01:07:48 by 59

Hi All,

I am getting an error when trying to add a Flow. The error message says 'The flow input and output schema cannot be represented in WADL. code: FlowWadlConversionNotSupported' 

I actually updated an existing flow to allow PowerApps to pass one extra parameter. I got an error when refreshing the existing flow. The error message is 'The flow input and output schema cannot be represented in WADL.
code: FlowWadlConversionNotSupported' .  This is the reason I created a new flow.

 

The new flow was created by clikin on 'Add new' in the power app maker. It did work initially and srated throwing hte error when I made update to parse JSON. I have removed the JSON parsing part and the error is still there.

 

Did anyone have similar issue?

 

Thanks,

  • nvivek Profile Picture
    3 on 24 Jun 2024 at 18:58:25
    Re: Unable to add flow

    Thank you! I faced the same issue. It threw the error after I used a real query to generate the schema. It left out the data types for a couple of fields. After a filled in Type: "integer" for each of them, the error went away.

  • PendaRed Profile Picture
    2 on 12 Apr 2024 at 08:29:35
    Re: Unable to add flow

    Hello,

     

    A quick way to fix thix error 

     

    When generate your Schema, at the end you will find some require Paremeter, if thoses parameters are empty in your Json, this will cause this, you can get rid of those parameters in the require section of your Schema, then your flow will be added to Power Apps (See attached picture)

  • EAHVyStarCU Profile Picture
    6 on 05 Dec 2023 at 21:34:15
    Re: Unable to add flow

    This didn't fix it for me, I added the null handling, and I was able to refresh my object in Power Apps, but it lost the schema in the app.  I had to go back and remove all null handling and just have the types specified and it started working.

  • Verified answer
    Heartholme Profile Picture
    1,278 Super User 2024 Season 1 on 04 Oct 2023 at 14:34:45
    Re: Unable to add flow

    Hi @aarnav

     

    This will also solve your issue: 

     

    https://powerpostal365.com/2023/10/04/how-to-handle-null-data-when-passing-json-objects-from-flow-to-powerapps/

     

    âś” Marking my post as a solution not only confirms that your question has been answered, but also helps others find solutions to similar problems.
    By doing so, you'll be making a valuable contribution to the community.

    Best Regards
    Heartholme

  • brunosantos Profile Picture
    6 on 15 Jun 2023 at 14:24:19
    Re: Unable to add flow

    Thanks Todd-fraser. My issue was similar, I had some properties with {"type": ["string","null"]}, was solved by forcing it to string only. 

  • techsan20 Profile Picture
    33 on 27 Apr 2023 at 21:13:52
    Re: Unable to add flow

    This is the way.   Thanks!   I had multiple ones missing data type.

  • mkredpoint Profile Picture
    12 on 27 Mar 2023 at 13:17:43
    Re: Unable to add flow

    this saved me! thank you!!

  • Mach_GO_GO_GO Profile Picture
    27 on 21 Mar 2023 at 15:18:22
    Re: Unable to add flow

    If you want to send me your schema to take a look at, I'll see if I can find anything. 

  • lindanicla Profile Picture
    3 on 21 Mar 2023 at 15:13:58
    Re: Unable to add flow

    same happens to me

     

  • Mach_GO_GO_GO Profile Picture
    27 on 10 Dec 2022 at 05:24:19
    Re: Unable to add flow

    Thank-you so much. Wish I would've come across this answer an hour ago.

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