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How to Fix Microsoft Planner Task Limit Errors in Power Automate

Maira Mehtab Oct 15, 2026 868 views

Question details

The user is experiencing a request-limit error in a Power Automate flow designed to create new Planner tasks from incoming emails.

How to Fix Microsoft Planner Task Limit and Power Automate Errors

Product: Microsoft Planner and Power Automate
Device & OS: not provided
Scenario: Running an automated flow to generate Microsoft Planner tasks whenever a specific email arrives.
Observed behavior: The Power Automate flow fails with a 'The request exceeded allowed limits' error because the destination Planner plan has reached its 9,000-task capacity.

Before you start

Check the total number of active and completed tasks in your target Microsoft Planner plan to confirm if you have reached the 9,000-task threshold.

Solution 1Recommended

Remove Completed Tasks to Free Up Plan Capacity

The fastest way to resolve the limit error is to manually delete completed or unnecessary tasks from your plan to make room for new ones.

Microsoft Planner imposes a hard limit of approximately 9,000 tasks per plan. This includes both active and completed tasks. Removing older, completed items allows your automated workflows to resume normal operation.

Open Microsoft Planner

Log into your Microsoft 365 account, navigate to Planner, and open the specific plan where your flow creates tasks.

Filter Completed Tasks

Click on the 'Filter' option in the top right corner and select 'Completed' to view only the tasks that are finished.

Delete Unnecessary Tasks

Click the three dots (More options) on a completed task and select 'Delete'. Repeat this process for tasks you no longer need to retain.

Resubmit the Failed Flow

Go back to Power Automate, navigate to your flow's run history, select the failed run, and click 'Resubmit' to verify the error is resolved.

Remove Completed Tasks to Free Up Plan Capacity

Automate Cleanup: You can create a separate scheduled Power Automate flow to automatically delete tasks that have been completed for over 30 days, keeping your plan well below the limit.

Solution 2

Split Work Across Multiple Planner Plans

If you need to keep thousands of active tasks, distribute the workflow load across multiple plans to avoid hitting the single-plan limit.

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Frequently Asked Questions

What is the maximum number of tasks a Microsoft Planner plan can hold?

A single Microsoft Planner plan can hold approximately 9,000 tasks in total. This limit includes both active and completed tasks within the plan.

Why does my Power Automate flow return a 'request exceeded allowed limits' error?

This error generally occurs when the target service has reached its capacity limit. In the context of Planner, it means the plan has hit the 9,000-task threshold, preventing Power Automate from creating new tasks.

Can I automatically delete completed Planner tasks to avoid hitting the limit?

Yes. You can build a scheduled Power Automate flow that periodically lists tasks in a specific plan, filters for those marked as completed, and deletes them automatically to free up space.

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