When automating management of Planner tasks, it can be challenging to update or delete checklist items. To update checklist items, you can use the 'Update task details' action and provide the unique identifier of the checklist item. To delete checklist items, it is not currently possible using Power Automate flow. However, you have two options to work around this. The first option is to recreate the entire task, which involves getting the task details, deleting it, and creating a new one with the original information. The second option is to close the checklist items that are no longer needed by changing the 'isChecked' property. This way, the item will still be in the list but closed.
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