Teams owner unable to create a Planner tab

Symptoms

When trying to create a new Planner tab in Microsoft Teams, a team owner receives this error message from the Teams client:

"Failed to create the plan".

Cause

The owner isn't a member of the Microsoft 365 group associated with the team. This prevents the Planner API from triggering the plan creation.

Resolution

Add the owner as a member of the Microsoft 365 group. For more information, see Add or remove members from Microsoft 365 groups using the admin center.

More information

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