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Power automate Update task details - error for Checklist items

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Posted on by NS-17100722-0

If i don't put a value in the is Checked field of the Update task details this happens:

but if i want to add a FALSE in the field this happens

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Expiscornovus 33,851 Most Valuable Professional on at

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When you use the isChecked property you need to make sure you use a value of true or false for your checklist item. In your case it looks like that value was empty (null).

https://learn.microsoft.com/en-us/graph/api/resources/plannerchecklistitem?view=graph-rest-1.0

Below is an example what it expects.

[{ "id": "1234", "title": "Testitem", "isChecked": false }]

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billf24 160 on at

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I have also run into this issue. The below response does not fix the issue. When using the New Designer and the Update Task Details, when you select false for the isChecked, you get the above error. If you write it as the script Expiscornovus shows below, false will show in the IsChecked, but once you save it, it reverts to blank and null.

I went to the Classic Designer and was able to enter No which shows as false, then went back to the New Designer. It now shows the item as false but again, once you save it, it clears that box.

So to use this for now, you will have to use the Classic Version. Unless someone else has a solution.

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