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Power Platform Community / Forums / Power Automate / Apply to Each Default ...
Power Automate
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Apply to Each Default Behavior of Concurrency control description not the same in New Designer as Legacy

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Posted on by 18

Hello,

 

I have a flow that makes an http patch request to Graph API on an email item.

it's located in an apply to each where a variable is used as a trigger to avoid next runs of the loop to not apply further actions...

Then my apply to each needs to be setup in a sequence and not in parallel for that trigger to work correctly.

I have a failed run where the patch has failed because of modification key beeing changed before the change has applied.

It makes me think the apply to each has applied in parallel and not in sequence... and a second loop has applied a change before the first did so.

 

Finally looking at the description of this action in the legacy Designer:

each loops execute sequentially by default. Override the default setting to customize the degree of parallelism.

 

And looking at the description in the new designer:

By default, Logic App instances run at the same time, or in parallel. This control changes how new runs are queued and can't be changed after enabling. To run as many parallel instances as possible, leave this control turned off. To limit the number of parallel runs, turn on this control, and select a limit. To run sequentially, select 1 as the limit.

 

So which assesment is true ? default behavior is sequential or parallel in apply to each ?

is the behavior different if I save from old or new designer ?

 

I guess turning on and selecting "1" as a degree of parallelism stick it as sequentially anyway.

 

But in other older flows I have those loops that needs to be run sequentially as well and that have the trigger turned off. So I'd like to be aware of any change in the default behavior of that action...

 

Thanks

 

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I have the same question (0)
  • jefmeyer Profile Picture
    166 on at

    I have the same question. 🙂  Did you ever figure this out?

  • ScottJones Profile Picture
    3 on at

    I would like to know as well. It would be nice to get an answer without having to test this myself.

  • vc329 Profile Picture
    7 on at

    The tooltip is wrong and misleading -- this only applies to triggers. If you check Microsoft documentation, it says default for 'Apply to each' loops is 1 (sequential):

    vc329_0-1719480767047.png

     

    https://learn.microsoft.com/en-us/power-automate/limits-and-config#concurrency-looping-and-debatching-limits

     

    Found this out the hard way after multiple testing.

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