PL-900 Practice Question: Demonstrate the capabilities of Power Automate
A sales team uses a Power Automate flow that creates a contact in Dynamics 365 Sales whenever a new lead is added to a Salesforce system. The flow has been running successfully for months, but recently it started failing with an authentication error. 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 Salesforce connection credentials have expired
Authentication errors typically occur when the connection credentials for the connected service (Salesforce) expire or are revoked. Option A is incorrect because exceeding execution quotas would cause flow failures but not specifically authentication errors. Option B is incorrect because schema changes would cause data conversion or mapping errors, not authentication errors. Option C is incorrect because API rate limits would produce throttling errors (e.g., HTTP 429), not authentication errors.
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 has exceeded its daily execution quota
Why it's wrong here
Exceeding quota results in throttling, not authentication errors.
- ✗
The lead entity schema in Salesforce has changed
Why it's wrong here
Schema changes cause data mapping errors, not authentication errors.
- ✗
The flow is hitting API rate limits
Why it's wrong here
Rate limits cause '429 Too Many Requests' errors, not authentication errors.
- ✓
The Salesforce connection credentials have expired
Why this is correct
Expired credentials are the most common cause of authentication failures.
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.