PL-900 Demonstrate the capabilities of Power Apps Practice Question
Exhibit
Refer to the exhibit.
```
{
"name": "Order Approval",
"type": "canvas",
"dataSources": [
{
"type": "Microsoft Dataverse",
"entities": ["Orders", "OrderDetails"],
"relationships": [
{
"fromEntity": "Orders",
"toEntity": "OrderDetails",
"relationshipType": "OneToMany",
"fromKey": "OrderID",
"toKey": "OrderID"
}
]
}
],
"controls": [
{
"type": "Gallery",
"name": "OrderGallery",
"items": "Orders",
"template": {
"fields": ["OrderID", "OrderDate", "Total"],
"controls": [
{
"type": "Button",
"name": "DetailButton",
"text": "View Details",
"action": "Navigate(OrderDetailScreen)"
}
]
}
}
]
}
```A developer creates a canvas app to display orders from Microsoft Dataverse. The app uses the gallery and data configuration shown in the exhibit. When the app runs, the gallery shows orders but the 'View Details' button does nothing when tapped. What is the most likely cause?
⚠ Common exam trap
Many candidates assume the button's OnSelect property must have a syntax error when it does nothing, but Power Apps silently fails on invalid screen references, making the missing screen the more subtle and likely cause.
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
✓
The target screen 'OrderDetailScreen' does not exist in the app
The Navigate function in the button's OnSelect property references 'OrderDetailScreen', but if that screen does not exist in the app, the function cannot execute, causing the button to appear unresponsive. The gallery displays orders correctly, confirming the data source and Items property are functional, isolating the issue to the navigation target.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The button's OnSelect property has a syntax error
Why it's wrong here
The exhibit shows the action as 'Navigate(OrderDetailScreen)', which is valid syntax.
- ✓
The target screen 'OrderDetailScreen' does not exist in the app
Why this is correct
The navigation action references a screen that is not defined.
- ✗
The Dataverse connection requires user authentication
Why it's wrong here
If authentication failed, the gallery would not show data.
- ✗
The gallery's items property is misconfigured
Why it's wrong here
The gallery shows orders, so items property works.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.