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HTTP POST - Empty Payload. JSON content expected when running in power automate

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Posted on by Babbabooey

Hi.

I've created a flow to add users devices to an Azure AD group. Using MS Graph testing it works perfectly, but when in power automate it fails saying Empty Payload. JSON content expected. I'm sure it's something simple that just needs tweaking on the flow somewhere, but I can't figure it out. Any help would be really appreciated.

This works...

This doesn't work ...

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Building flows

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Dieter Gobeyn 29 on at

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The error says the JSON body is invalid,
Based on your screenshot, you missed the open and closing brackets => { and } in your HTTP body request:
{
"@odata.id": "https://xxxxxxx"
}

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Babbabooey 20 on at

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Hi Dieter.

Thanks for the reply, but it doesn't allow the brackets in power automate, that's why they aren't present.
It gives the below error if you include them, and doesn't let you save the flow.

.

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Dieter Gobeyn 29 on at

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From this article:
Logic Apps workflow definitions with the Workflow Definition Language schema
If you have a literal string that starts with the @ character, prefix the @ character with another @ character as an escape character: @@
So in your case, this should work:
{ "@@odata.id": "your value here" }

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Babbabooey 20 on at

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I found the same article this morning, and that was the fix. Thank you 😊

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