PL-900 Practice Question: Demonstrate the capabilities of Power Automate
A user wants to create a Power Automate cloud flow that automatically posts a message to a Microsoft Teams channel whenever a new task is added to a Planner plan. Which trigger should the user select to start the flow?
⚠ Common exam trap
The trap here is selecting a trigger that monitors the target system (Teams) instead of the source system (Planner), which would invert the flow's logic.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
When a new task is created (Planner)
The Planner 'When a new task is created' trigger is the only one that detects new tasks in a Planner plan. It supplies task details that can be included in a Teams message. The other triggers monitor Teams messages, task completion, or SharePoint items, none of which correspond to the creation of a Planner task. Therefore, the Planner trigger is the correct starting point for this flow.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
When a new item is created (SharePoint)
Why it's wrong here
This trigger monitors SharePoint lists for new items, not Planner tasks. Planner stores its data internally and is not a SharePoint list, so this trigger would not fire for new Planner tasks. It is relevant for SharePoint-based task tracking, but not for the Planner scenario described.
- ✗
When a new channel message is added (Microsoft Teams)
Why it's wrong here
This trigger fires when a message is posted in a Teams channel, not when a Planner task is created. Using it would cause the flow to run on Teams messages, which is the opposite of the desired behavior. It does not monitor Planner at all, so it cannot detect new tasks.
- ✗
When a task is completed (Planner)
Why it's wrong here
This trigger fires when a Planner task is marked as complete, not when a new task is created. If used, the flow would post a Teams message only after task completion, missing the requirement to notify on creation. It responds to a different lifecycle event and would not provide timely notifications for new tasks.
- ✓
When a new task is created (Planner)
Why this is correct
This trigger is specifically designed to fire when a new task is added to a Planner plan. It provides details about the task, such as its title and assignee, which can be used in the subsequent Teams action. It directly matches the event the user wants to monitor, making it the correct choice for this scenario.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Microsoft exam blueprint
This PL-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PL-900 exam.