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Power Automate - AI Builder
Unanswered

StructuredOutput (JSON Output) missing on "Create Text with GPT"

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Posted on by 989 Super User 2025 Season 1
Does anyone know why the "structuredOutput" property (JSON Output) of the AI Builder "Create Text with GPT..." action doesn't always appear in the final output?  Is it a rate limite/throttling issue?
(I am just playing with it in a development environment, using trial licenses etc. if that's a factor).

Here's an example/more background:
I'm really enjoying the AI Builder for Power Automate connector, especially custom prompts with the "Create Text with GPT using a prompt" action.

I frequently use the JSON Output feature to structure the GPT output. 


This works wonderfully--when it works.  Frequently the "structuredOutput" property of the action's output is just missing--fortunately the JSON object is usually still there in string format in the "text" property.  My work around to avoid flow failures is to use a JSON() expression on the "text" output, and then I can either coalesce references to the properties, or coalesce the whole object into a compose or variable.   It'd be much easier and quicker to construct the flows if I could rely on the structured output always being there.

Here I have a prompt that extracts some data from records to help categorize them automatically.

Example of a Good run (has "structuredOutput" property):


Example of a frequent run missing the "structuredOutput" property:

  • rbtzn Profile Picture
    2 on at
    StructuredOutput (JSON Output) missing on "Create Text with GPT"
    Hello Mark,
     

    Same problem here. Depending on a different input, the result of the prompt is OK or not (i.e., I have structuredOuptut or not).
    opened an MS support ticket to try to solve the problem.

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