Copilot Studio

Is there a way to pass a "record" variable to a Power Automate Flow?

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Posted on by EricW

How can I get around this error?

"record" is just a JSON string...this should not throw a Binding error.

Any ideas?

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Vinoth Selvam 1,590 Super User 2025 Season 2 on at

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Hi EricW,

This error occurs when there’s a mismatch between the input data type expected by Power Automate and the data type actually being passed in. In your case, it seems that Power Automate is expecting a simple string as input, but you’re passing a JSON object (record).

If you’re generating the JSON in Power Automate, use the json() or string() function to convert the JSON object to a string format before passing it as input. Something like this

string(variables('YourJSONRecord'))

Please check the flow input field inside the Power automate on what record type is used.

Thanks.

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EricW 11 on at

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I'm trying to pass the record FROM Copilot Studio INTO Power Automate. The string() function does not exist and the json() function appears to be bugged.

It literally says in the tip that it generates a string from a record and then throws an error saying it "cannot serialize objects of type 'Record'."

Explain that one to me.

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Vinoth Selvam 1,590 Super User 2025 Season 2 on at

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Hi EricW,

In that case, Instead of trying to pass a full record, pass individual fields as separate variables or create a simplified JSON structure manually.

Like this:

"{ \"field1\": \"" + Record.Field1 + "\", \"field2\": \"" + Record.Field2 + "\" }"

Thanks.

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EricW 11 on at

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I appreciate the suggestions, but it doesn't seem like we're using the same software:

I've tried all these things before, nothing works as expected.

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