PL-900 Practice Question: Describe the business value of Microsoft Power Platform
A company uses Power Automate to process purchase orders. After a recent update, the flow fails intermittently with a '429 Too Many Requests' error. What is the most likely cause?
⚠ Common exam trap
It's easy for candidates to confuse '429 Too Many Requests' with authentication or connectivity issues, but the exam specifically tests knowledge of Power Platform service protection limits as a distinct throttling mechanism.
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 flow is exceeding Power Platform service protection limits.
The '429 Too Many Requests' error is an HTTP status code indicating rate limiting. In Power Automate, this occurs when a flow exceeds the Power Platform service protection limits, which are designed to prevent resource overconsumption. These limits include API request caps (e.g., 30 requests per 60 seconds per connection) and daily invocation quotas (e.g., 5,000 requests per day for a per-user plan). The error is not related to authentication expiry, outdated flow versions, or data source availability.
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 flow uses an expired connector authentication.
Why it's wrong here
Expired auth causes 401 or 403 errors, not 429.
- ✗
The flow is running an outdated version.
Why it's wrong here
Version mismatch typically causes different errors.
- ✓
The flow is exceeding Power Platform service protection limits.
Why this is correct
429 errors are throttling responses due to rate limits.
- ✗
The data source is temporarily unavailable.
Why it's wrong here
Unavailable data source gives 503 or connection errors.
Go deeper
Related to this question
About these practice questions
This PL-900 question is part of Courseiva's 904-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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.