This AZ-400 practice question tests your understanding of design and implement build and release pipelines. 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.
You have the YAML pipeline exhibit above. The pipeline fails with: 'The pipeline is not valid. Could not find the template file shared-templates/build-steps.yml.' 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.
The checkout step for 'shared-templates' must be before the template reference, which it is.
Why wrong: Checkout order is correct.
B
The template file is missing from the shared-templates repository.
Why wrong: The error says 'could not find', but the path might be wrong.
C
The template path is incorrect because it should be relative to the repository root; the repository name is 'myorg/shared-templates', so the path should be 'build-steps.yml'.
The path 'shared-templates/build-steps.yml' suggests that the template is in a subfolder, but the repository root is already 'shared-templates'.
D
The ref 'refs/heads/main' does not exist in the shared-templates repository.
Why wrong: The ref is likely correct; if it didn't exist, error would be different.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The template path is incorrect because it should be relative to the repository root; the repository name is 'myorg/shared-templates', so the path should be 'build-steps.yml'.
Option C is correct because when referencing a template from another repository in Azure Pipelines, the `repository` property specifies the repository name (e.g., `myorg/shared-templates`), and the template path must be relative to the root of that repository. The error indicates the pipeline cannot find the file, meaning the path `shared-templates/build-steps.yml` is incorrect; it should be just `build-steps.yml` since the repository name is already declared in the `repository` field. The path should not include the repository name again.
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 checkout step for 'shared-templates' must be before the template reference, which it is.
Why it's wrong here
Checkout order is correct.
✗
The template file is missing from the shared-templates repository.
Why it's wrong here
The error says 'could not find', but the path might be wrong.
✓
The template path is incorrect because it should be relative to the repository root; the repository name is 'myorg/shared-templates', so the path should be 'build-steps.yml'.
Why this is correct
The path 'shared-templates/build-steps.yml' suggests that the template is in a subfolder, but the repository root is already 'shared-templates'.
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 ref 'refs/heads/main' does not exist in the shared-templates repository.
Why it's wrong here
The ref is likely correct; if it didn't exist, error would be different.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume the template path must include the repository name or folder structure, when in fact the path is relative to the root of the repository specified in the `repository` field, leading to a common mistake of over-specifying the path.
Detailed technical explanation
How to think about this question
In Azure Pipelines YAML, when using `repository` to reference an external template, the `name` property (e.g., `myorg/shared-templates`) is the repository identifier, and the template `path` must be relative to the root of that repository. The pipeline system resolves the template by combining the repository name and the path, so including the repository name in the path (e.g., `shared-templates/build-steps.yml`) causes a double-nesting error. This is similar to how Git submodules or multi-repo setups require careful path specification to avoid 'file not found' errors.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-400 question in full detail.
Design and implement build and release pipelines — This question tests Design and implement build and release pipelines — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The template path is incorrect because it should be relative to the repository root; the repository name is 'myorg/shared-templates', so the path should be 'build-steps.yml'. — Option C is correct because when referencing a template from another repository in Azure Pipelines, the `repository` property specifies the repository name (e.g., `myorg/shared-templates`), and the template path must be relative to the root of that repository. The error indicates the pipeline cannot find the file, meaning the path `shared-templates/build-steps.yml` is incorrect; it should be just `build-steps.yml` since the repository name is already declared in the `repository` field. The path should not include the repository name again.
What should I do if I get this AZ-400 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.
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Question Discussion
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