The correct answer is to request a service quota increase for the maximum number of state machine executions from AWS Support. This resolves the StateMachineExecutionLimitExceeded error because Step Functions enforces a hard default limit of 1,000 concurrent executions per state machine, and when multiple pipeline runs trigger simultaneously, exceeding this cap causes the intermittent failures described. On the AWS Certified Data Engineer Associate DEA-C01 exam, this scenario tests your understanding of service quotas versus resource-level limits—a common trap is confusing Step Functions execution limits with Lambda concurrency limits, which are separate and unrelated. The key distinction is that Step Functions controls orchestration capacity, not individual function throughput. For memory, remember the mnemonic "Step Quota, Not Lambda"—when you see execution limit errors, always check the state machine’s concurrent execution quota first, not the downstream services.
DEA-C01 Data Operations and Support Practice Question
This DEA-C01 practice question tests your understanding of data operations and support. 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 runs a data pipeline using AWS Step Functions to orchestrate multiple AWS Lambda functions and AWS Glue jobs. The pipeline processes large CSV files from Amazon S3, transforms them, and loads them into Amazon Redshift. Recently, the pipeline has been failing intermittently with a 'StateMachineExecutionLimitExceeded' error. The error occurs when multiple pipeline runs are triggered simultaneously. The current execution limit for the state machine is 1000. The team expects up to 200 concurrent executions during peak hours. Which action should the team take to resolve the issue?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Request a service quota increase for the maximum number of state machine executions from AWS Support.
Option D is correct because the error indicates the state machine execution limit has been reached. The team should request a limit increase from AWS Support. Option A is wrong because reducing concurrency does not solve the limit issue; it only reduces the number of concurrent executions. Option B is wrong because increasing Lambda concurrency limits does not affect Step Functions execution limits. Option C is wrong because the error is not about execution timeout; it's about exceeding the maximum number of concurrent executions.
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.
✗
Increase the execution timeout for the state machine to 1 hour.
Why it's wrong here
The error is about execution count, not duration.
✗
Increase the Lambda function concurrency limits to allow more parallel processing.
Why it's wrong here
Lambda concurrency is separate from Step Functions execution limits.
✗
Implement a queue (e.g., Amazon SQS) to buffer the pipeline triggers and process them sequentially.
Why it's wrong here
This reduces concurrency but does not increase the limit; the error will still occur if the queue triggers more than 1000 executions.
✓
Request a service quota increase for the maximum number of state machine executions from AWS Support.
Why this is correct
The default limit is 1000; increasing it to 2000 would accommodate the expected concurrency.
Related concept
Read the scenario before looking for a memorised answer.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which DEA-C01 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.
Data Operations and Support — This question tests Data Operations and Support — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Request a service quota increase for the maximum number of state machine executions from AWS Support. — Option D is correct because the error indicates the state machine execution limit has been reached. The team should request a limit increase from AWS Support. Option A is wrong because reducing concurrency does not solve the limit issue; it only reduces the number of concurrent executions. Option B is wrong because increasing Lambda concurrency limits does not affect Step Functions execution limits. Option C is wrong because the error is not about execution timeout; it's about exceeding the maximum number of concurrent executions.
What should I do if I get this DEA-C01 question wrong?
Identify which DEA-C01 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.
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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