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Power Platform Community / Forums / Power Automate / Calling child power au...
Power Automate
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Calling child power automate flow via parent powerautomate

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While calling a child powerautomate via parent powerautomate through http request an error occurs such as HTTP request failed "The OAuth authorization scheme is required. Please add authentication scheme and try again."
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    David_MA Profile Picture
    14,605 Super User 2026 Season 1 on at
    Maybe there is a way to call a child flow from an HTTP request, but I am not aware of a way. You need to use the action Run a child flow:
    To run child flows requires an environment with Dataverse enabled and both flows need to be in a solution. Note, the child flow does not need to be in the same solution as the parent, but it needs to be in the same environment.
     
    Instead of asking how to call a child flow, did you mean to ask how to trigger a flow that is configured with When an HTTP request is received? I suppose you could consider this a child flow, but it is not technically in Power Automate.

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