The answer is that the deployment group was deleted or renamed after the pipeline was configured. This error occurs because CodePipeline’s deploy stage holds a static reference to a specific CodeDeploy deployment group; if that group is removed or its name changed, the pipeline cannot resolve the target, causing the intermittent failure. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this scenario tests your understanding of how CodePipeline dependencies are tied to external resources—a common trap is confusing this with IAM permission errors or capacity issues, which produce different error messages. Remember that “group not found” always points to a missing or renamed resource, not a permissions or scaling problem. A useful memory tip: if the error says “does not exist,” check the resource name first, not the roles or capacity.
DOP-C02 Configuration Management and IaC Practice Question
This DOP-C02 practice question tests your understanding of configuration management and iac. 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.
A company uses AWS CodePipeline to automate deployments. The pipeline has a source stage (CodeCommit), a build stage (CodeBuild), and a deploy stage (CodeDeploy). The DevOps engineer notices that the pipeline fails intermittently during the deploy stage with the error: 'The deployment failed because the deployment group does not exist'. 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The deployment group was deleted or renamed after the pipeline was configured
Option B is correct because the deployment group is configured in CodeDeploy, and if the pipeline's deploy stage references a deployment group that does not exist, it will fail. Option A is wrong because IAM roles would cause a different error. Option C is wrong because insufficient capacity would cause a deployment error, not a missing group. Option D is wrong because the application name would also cause a different error.
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 deployment group was deleted or renamed after the pipeline was configured
Why this is correct
If the deployment group is missing, the deploy stage fails.
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 Auto Scaling group associated with the deployment group has insufficient capacity
Why it's wrong here
This would cause a capacity error, not a missing group.
✗
The CodePipeline service role does not have permission to call CodeDeploy
Why it's wrong here
This would cause an access denied error.
✗
The CodeDeploy application name in the pipeline is misspelled
Why it's wrong here
Misspelling would cause an application not found error.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Configuration Management and IaC — This question tests Configuration Management and IaC — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The deployment group was deleted or renamed after the pipeline was configured — Option B is correct because the deployment group is configured in CodeDeploy, and if the pipeline's deploy stage references a deployment group that does not exist, it will fail. Option A is wrong because IAM roles would cause a different error. Option C is wrong because insufficient capacity would cause a deployment error, not a missing group. Option D is wrong because the application name would also cause a different error.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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