The answer is that the local `terraform plan` left the state locked in Terraform Cloud. This occurs because when you run `terraform plan` locally against a workspace using remote state, Terraform Cloud acquires a state lock to prevent concurrent modifications. If the developer does not follow the plan with an `apply` or explicitly release the lock—such as by using `terraform force-unlock`—that lock remains active. When the VCS pipeline later triggers a new run, it cannot acquire the lock, resulting in the state lock error. On the HashiCorp Terraform Associate TF-003 exam, this scenario tests your understanding of the CLI-driven run workflow and how state locking behaves across local and remote operations. A common trap is assuming that a successful local plan automatically releases the lock, but it does not—the lock persists until the run completes or is manually freed. Memory tip: think of a plan as a “reservation” that must be checked out with an apply or explicitly canceled.
TF-003 Understand Terraform basics Practice Question
This TF-003 practice question tests your understanding of understand terraform basics. 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.
An organization uses Terraform Cloud for remote state management. They have a workspace that uses the CLI-driven run workflow. A developer runs `terraform plan` locally and sees that the plan succeeds. However, when they push the same configuration to the version control system (VCS) connected to the workspace, the plan fails with a state lock error. What is the most likely reason?
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 local `terraform plan` left the state locked in Terraform Cloud
The local `terraform plan` command acquires a state lock in Terraform Cloud to prevent concurrent modifications. When the developer runs `terraform plan` locally but does not follow it with `terraform apply` or explicitly release the lock (e.g., via `terraform force-unlock`), the lock persists. When the VCS pipeline triggers a new run, it attempts to acquire the same lock, which is still held by the local session, causing the plan to fail with a state lock 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 Terraform version in the VCS pipeline is different
Why it's wrong here
Version mismatch would cause syntax errors, not lock errors.
✓
The local `terraform plan` left the state locked in Terraform Cloud
Why this is correct
If the plan didn't release the lock, subsequent runs are blocked.
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 VCS branch is not configured as the workspace's working branch
Why it's wrong here
Would not cause a state lock error.
✗
The VCS pipeline does not have access to the Terraform Cloud workspace
Why it's wrong here
Would cause authentication errors, not state lock.
Common exam traps
Common exam trap: answer the scenario, not the keyword
HashiCorp often tests the misconception that state locks are only held during `terraform apply`, but in Terraform Cloud, `terraform plan` also acquires a lock to ensure consistency, and candidates may incorrectly attribute the failure to VCS configuration or permissions issues.
Detailed technical explanation
How to think about this question
Terraform Cloud uses a backend-level locking mechanism via the `cloud` block or remote backend, where each plan or apply operation acquires a lock stored in the Terraform Cloud API. The lock is released only when the operation completes or is explicitly cancelled. In the CLI-driven workflow, `terraform plan` acquires a lock that is not automatically released until the plan is either applied or discarded; if the developer closes the terminal or does not run `terraform apply`, the lock remains active for the duration of the session timeout (default 30 minutes). This is a common pitfall in team environments where multiple users or CI/CD pipelines interact with the same workspace.
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 practitioner preparing for the TF-003 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
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.
Understand Terraform basics — This question tests Understand Terraform basics — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The local `terraform plan` left the state locked in Terraform Cloud — The local `terraform plan` command acquires a state lock in Terraform Cloud to prevent concurrent modifications. When the developer runs `terraform plan` locally but does not follow it with `terraform apply` or explicitly release the lock (e.g., via `terraform force-unlock`), the lock persists. When the VCS pipeline triggers a new run, it attempts to acquire the same lock, which is still held by the local session, causing the plan to fail with a state lock error.
What should I do if I get this TF-003 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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