PL-900 Demonstrate the capabilities of Power Apps Practice Question
A model-driven app for inventory management uses a custom entity 'Warehouse'. The app maker added a subgrid showing 'Warehouse Items' related to the selected warehouse. However, the subgrid does not show any data even though there are items linked. What is the most 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 relationship between Warehouse and Warehouse Items is not configured correctly or is missing.
The most likely cause is that the relationship between Warehouse and Warehouse Items is not configured correctly or is missing (Option C). Without a proper one-to-many relationship defined, the subgrid cannot retrieve the related records. Option A is incorrect because the lookup field belongs on the Warehouse Items entity, not on the Warehouse form; the subgrid relies on the relationship, not a lookup on the main form. Option B is incorrect because read permissions would affect all views of the entity, not just the subgrid; given that items are linked, permissions are likely sufficient. Option D is incorrect because subgrids are fully supported on main forms in model-driven apps.
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 Warehouse form does not include the lookup field to Warehouse Items.
Why it's wrong here
The subgrid uses the relationship; a lookup field on the form is not required.
- ✗
The user does not have read permissions on the Warehouse Items entity.
Why it's wrong here
Security roles can prevent seeing records, but the subgrid would still show the grid (empty).
- ✓
The relationship between Warehouse and Warehouse Items is not configured correctly or is missing.
Why this is correct
Subgrids rely on a relationship to filter related records; without it, no data appears.
- ✗
The subgrid component is not supported on the main form.
Why it's wrong here
Subgrids are supported on main forms.
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Written by Johnson Ajibi, MSc IT Security
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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.