There is an issue deserializing your AI Builder action

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Posted on by Ronan Condon

Hello!

I'm aware of the other posts regarding this but best to make a new one so MS take action.

I have this very complex business critical flow that does classification on product issues and reporting, it randomly started failing last night around 9 o'clock AEST.

Have tried the other possible fixes mentioned in the other thread's but nothing, using 03 as the model.

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JH-16071008-0 10 on at

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There is an issue deserializing your AI Builder action

Hi I raised a ticket earlier with MS and this is the workaround while they fix it:

5506239 | Power Platform admin center

Basically save the flow using the old designer not the new and all works again.

This works great for me.

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Michael E. Gernaey 47,123 Super User 2025 Season 2 on at

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There is an issue deserializing your AI Builder action

H i@Ronan Condon

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Ronan Condon 6 on at

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There is an issue deserializing your AI Builder action

@Michael E. Gernaey

Unfortunately it's not that simple, this flow in particular is a huge flow!!
I have re added and it worked for a run and then died again, unfortunately the subsequent prompts below also suffering the same issue, removing and re adding them all over and over again isn't an option.

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Michael E. Gernaey 47,123 Super User 2025 Season 2 on at

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There is an issue deserializing your AI Builder action

Hi @RC-12082203-0

Unfortunately the PG and MS doesn't monitor these for bugs so posting another won't really help.

What will help is to open a ticket at your Tenant (Portal.Office.Com)

I am going to guess you already removed and re-added the action as suggested, but is it possible to share what the Input is? The Raw Input that is.

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