Question 388 of 977

Describe Dynamics 365 Customer Insights →mediumMultiple ChoiceObjective-mapped

Quick Answer

The correct answer is that the segment query uses an invalid field name for the Contact entity. This is because Dynamics 365 Customer Insights - Journeys validates the target segment before a journey can start; if the segment query references a field that does not exist on the Contact entity, the segment fails to resolve, leaving the journey stuck in a draft or stopped state. On the MB-910 exam, this scenario tests your understanding of how journey triggers and segment definitions interact—specifically, that a journey cannot launch if its underlying segment query is broken. A common trap is assuming the custom event itself is misconfigured, but the real issue is often a typo or outdated field in the segment’s query logic. Remember the memory tip: “Check the segment field before you yield,” meaning always verify that every field in your segment query exists on the target entity to avoid a stalled journey.

MB-910 Describe Dynamics 365 Customer Insights Practice Question

This MB-910 practice question tests your understanding of describe dynamics 365 customer insights. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

Exhibit

Refer to the exhibit.

{
  "triggers": [
    {
      "id": "btn_click",
      "name": "ButtonClicked",
      "entityType": "Contact",
      "eventType": "CustomEvent",
      "fields": ["ContactId", "ButtonName", "Timestamp"]
    }
  ],
  "segments": [
    {
      "id": "active_users",
      "name": "Active Users",
      "entityType": "Contact",
      "query": "Contact.Status eq 'Active'"
    }
  ],
  "journeys": [
    {
      "id": "welcome",
      "name": "Welcome Journey",
      "trigger": "btn_click",
      "segment": "active_users",
      "actions": [
        {
          "type": "SendEmail",
          "emailTemplate": "WelcomeEmail"
        }
      ]
    }
  ]
}

Refer to the exhibit. You are setting up a journey in Dynamics 365 Customer Insights - Journeys. The journey is triggered by a custom event 'ButtonClicked' and targets the 'Active Users' segment. After publishing, the journey does not start. What is the most likely cause?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

Question 1mediummultiple choice

Full question →

Exhibit

Refer to the exhibit.

{
  "triggers": [
    {
      "id": "btn_click",
      "name": "ButtonClicked",
      "entityType": "Contact",
      "eventType": "CustomEvent",
      "fields": ["ContactId", "ButtonName", "Timestamp"]
    }
  ],
  "segments": [
    {
      "id": "active_users",
      "name": "Active Users",
      "entityType": "Contact",
      "query": "Contact.Status eq 'Active'"
    }
  ],
  "journeys": [
    {
      "id": "welcome",
      "name": "Welcome Journey",
      "trigger": "btn_click",
      "segment": "active_users",
      "actions": [
        {
          "type": "SendEmail",
          "emailTemplate": "WelcomeEmail"
        }
      ]
    }
  ]
}

A
The email template 'WelcomeEmail' does not exist.
Why wrong: A missing email template would cause an error when the email action is executed, but the journey would still start.
B
The custom event requires authentication that is not configured.
Why wrong: Custom events do not require authentication by default.
C
The segment query uses an invalid field name for the Contact entity.
An invalid field in the segment query prevents the segment from being evaluated.
D
The trigger event does not include a 'ContactId' field.
Why wrong: The trigger includes ContactId, but even if missing, the journey could still start with other identifiers.

Full breakdown with real-world context →

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 segment query uses an invalid field name for the Contact entity.

Option C is correct because a segment query referencing an invalid field name for the Contact entity will cause the segment to fail to resolve, preventing the journey from starting. In Dynamics 365 Customer Insights - Journeys, the journey engine validates the segment before launching; if the segment query contains a field that does not exist on the Contact entity, the segment cannot be evaluated, and the journey remains in a 'Draft' or 'Stopped' state.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

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 email template 'WelcomeEmail' does not exist.
Why it's wrong here
A missing email template would cause an error when the email action is executed, but the journey would still start.
✗
The custom event requires authentication that is not configured.
Why it's wrong here
Custom events do not require authentication by default.
✓
The segment query uses an invalid field name for the Contact entity.
Why this is correct
An invalid field in the segment query prevents the segment from being evaluated.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The trigger event does not include a 'ContactId' field.
Why it's wrong here
The trigger includes ContactId, but even if missing, the journey could still start with other identifiers.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often assume journey startup failures are caused by missing event mappings or authentication issues, when in fact the most common cause is an invalid segment query that fails validation before the journey can begin.

Detailed technical explanation

How to think about this question

Under the hood, when a journey is published, Dynamics 365 Customer Insights - Journeys performs a pre-flight validation that includes checking the segment query against the Contact entity schema. If the query references a field that does not exist (e.g., a misspelled or deleted attribute), the segment engine throws an error, and the journey transitions to a 'Stopped' state with a validation error. This is different from runtime errors, which occur after the journey starts. In real-world scenarios, this often happens when a custom field is removed from the Contact entity after the segment was created, or when a developer mistypes a field name in the segment query.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.

TExam Day Tips

Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Related MB-910 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Describe Dynamics 365 Customer Insights practice questions

Practise MB-910 questions linked to Describe Dynamics 365 Customer Insights.

Describe Dynamics 365 Sales practice questions

Practise MB-910 questions linked to Describe Dynamics 365 Sales.

Describe Dynamics 365 Customer Service practice questions

Practise MB-910 questions linked to Describe Dynamics 365 Customer Service.

Describe Dynamics 365 Field Service practice questions

Practise MB-910 questions linked to Describe Dynamics 365 Field Service.

Explore the core capabilities of customer engagement apps in Dynamics 365 practice questions

Practise MB-910 questions linked to Explore the core capabilities of customer engagement apps in Dynamics 365.

Describe shared features and Copilot capabilities practice questions

Practise MB-910 questions linked to Describe shared features and Copilot capabilities.

MB-910 fundamentals practice questions

Practise MB-910 questions linked to MB-910 fundamentals.

MB-910 scenario practice questions

Practise MB-910 questions linked to MB-910 scenario.

MB-910 troubleshooting practice questions

Practise MB-910 questions linked to MB-910 troubleshooting.

Practice this exam

Start a free MB-910 practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

10 questions 20 questions 30 questions 50 questions Timed 30

MB-910 practice-test guide →Study guide →Browse all practice tests

FAQ

Questions learners often ask

What does this MB-910 question test?

Describe Dynamics 365 Customer Insights — This question tests Describe Dynamics 365 Customer Insights — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The segment query uses an invalid field name for the Contact entity. — Option C is correct because a segment query referencing an invalid field name for the Contact entity will cause the segment to fail to resolve, preventing the journey from starting. In Dynamics 365 Customer Insights - Journeys, the journey engine validates the segment before launching; if the segment query contains a field that does not exist on the Contact entity, the segment cannot be evaluated, and the journey remains in a 'Draft' or 'Stopped' state.

What should I do if I get this MB-910 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

About these practice questions

Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →

How Courseiva writes practice questions · Editorial policy

Last reviewed: Jun 24, 2026

Question Discussion

Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.

Loading comments…

This MB-910 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 MB-910 exam.