There is an issue deserializing your AI Builder action

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Posted on by OM-07081950-0

Hi,

I'm using a GPT prompt to read a pdf document (I have also tried this with text), and classify the document into 3 types. The flow runs well the first time or a few times. But it breaks down and I keep getting this error. I have tried a lot of fixes but nothing seems to work. I have even tried a Recognize text in image or document connector that works perfectly, to deliver text to the prompt. This is so disappointing, I am looking to build an invoice processing solution that would rely heavily on prompts.

Flow Failure: Issue with AI Builder connector.: There is an issue deserializing your AI Builder action

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Michael E. Gernaey Super User 2025 Season 2 on at

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Hi @OM-07081950-0

This is a new one for me.

Can you please try what it says first... delete it and recreate it? Its worth a shot.

Next, can you please open the run in the old UI (just click the new UX off top right toggle).

Then open the Action in this run here.

Let's get a copy of the Raw Inputs and Raw outputs

if you don't mind sharing those please. Paste them in, please don't use pictures so I can copy them to review them.

Thanks!

If these suggestions help resolve your issue, Please consider Marking the answer as such and also maybe a like.

Thank you!
Sincerely, Michael Gernaey

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CU10070821-0 on at

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have the same issue started from 07/08 as GPT5 was introduced. It is happening with o3 gpt and when i am running a manual test with old design in power automate prompt is working. which is very strange. After this flow is not working anyways only during manual test

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OM-07081950-0 on at

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My replies keep disappearing

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OM-07081950-0 on at

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Hi @Michael E. Gernaey,

Thanks for replying. This is the 3rd time I'm replying, they keep disappearing :/

I deleted and added the connector back several times. It only works once or twice then goes back to the error.

Also my experience is exactly like @CU10070821-0's. Worked with the old designer tests, but failed at the very first actual run.

I've attached the Raw inputs and outputs.

Thanks,

Omer

RAW inputs & ...

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