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Power Platform Community / Forums / Power Automate / random flow failure wh...
Power Automate
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random flow failure when awaiting approval

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I have a power automate flow that is triggered from a MS Form. It submits though multiple levels of approvals. One level has failed with the error Action 'Start_and_wait_for_Manager_approval' failed: The request failed. Error code: '502'. Error Message: 'BadGateway'. (this is the second approval level so the request ahs already has passed one approval.  What I'm at a loss to understand is what typically would trigger this error. There is a file attached to the approval (at each stage).
 
I've had issues where comments were being accumulated and I hit a string length constraint but this is something different.
 
any advice would be helpful
David V
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    Srini007 Profile Picture
    3,483 Super User 2026 Season 1 on at
     
    Since we don't have seen your flow and less control and you mentioned that random failure, can you check by resubmit the flow again and see if that is successful? If not then you have to look back to the previous flows which are succeeded and see what difference this flow has with compare to the other, maybe if you have attachments check if the attachment sizes are bigger or lesser, Also check the Output instead of Bad gateway do you have any error popup?
     

    (If this answers your question you can mark as Answered and give it a Like, it helps others to find the answers)

    Regards,
    Srini

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