PL-900 Practice Question: Demonstrate the capabilities of Power Automate
A company uses Power Automate to manage customer support tickets. They want to ensure that when a ticket is escalated, a notification is sent to the support manager. The escalation is indicated by a change in the 'Priority' column of a SharePoint list from 'Normal' to 'High'. Which trigger should they use to detect this change?
⚠ Common exam trap
Watch out — candidates often confuse triggers for creation with those for modification, and assuming that a trigger for document libraries applies to lists.
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 an item is modified
To detect a change in the 'Priority' column of a SharePoint list item, the flow must use a trigger that fires on item modification. The 'When an item is modified' trigger is designed for this purpose. It provides the before and after values of the item, allowing a condition to check if the priority changed from 'Normal' to 'High'. Other triggers either fire on creation, deletion, or are for document libraries. Therefore, the correct trigger is 'When an item is modified'.
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 file is created or modified (properties only)
Why it's wrong here
This trigger is for SharePoint document libraries, not lists. It fires when a file is created or modified, and only provides properties, not the content or column values of list items. The scenario involves a SharePoint list, not a document library. Therefore, this trigger is not applicable and would not detect the priority change.
- ✗
When an item is deleted
Why it's wrong here
The 'When an item is deleted' trigger fires when an item is removed from the list. It does not fire on modification. The escalation scenario does not involve deleting the ticket; it involves changing its priority. Therefore, this trigger is incorrect and would not meet the requirement.
- ✓
When an item is modified
Why this is correct
The 'When an item is modified' trigger fires when any column in a SharePoint list item changes. It provides the old and new values of the item, allowing you to compare the 'Priority' column and detect if it changed from 'Normal' to 'High'. This is the correct trigger because it specifically monitors for modifications to existing items, which is necessary to detect the escalation. It can be used with a condition to check the priority change.
- ✗
When an item is created
Why it's wrong here
The 'When an item is created' trigger fires only when a new item is added to the list. It does not fire when an existing item is modified. Since the escalation involves changing the 'Priority' of an existing ticket, this trigger would not detect the change. It is incorrect for this scenario because it does not monitor modifications.
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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
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