Quick Answer
The correct answer is that the SID must be unique within the AWS account and region. This is because SAP systems rely on the three-character System ID to identify themselves uniquely across the landscape; if you reuse an SID that already exists in the same account and region, it will cause conflicts in system identification and disrupt integration with AWS services such as Amazon EFS or Amazon FSx for SAP. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this concept tests your understanding of fundamental SAP-on-AWS prerequisites, often appearing as a straightforward scenario where a candidate assumes the SID can be freely reused anywhere. A common trap is thinking uniqueness applies globally across all AWS accounts, but the requirement is scoped to the account and region pair. Memory tip: think “SID is like a license plate—unique in your local DMV (account and region), not across the whole country.”
This PAS-C01 practice question tests your understanding of migration. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 is migrating a SAP system to AWS and wants to use the same SAP system ID (SID) as on-premises. What is a prerequisite for this migration?
The SID must be changed to a new value for the migration.
Why wrong: SID can be kept if unique.
The SID must be at least 5 characters long.
Why wrong: SID is typically 3 characters.
The SID must be registered with AWS.
Why wrong: No registration required.
The SID must be unique within the AWS account and region.
Duplicate SIDs are not allowed.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The SID must be unique within the AWS account and region.
Option D is correct because SAP requires that the System ID (SID) be unique within an AWS account and region to avoid conflicts with existing SAP systems. During migration, the same SID can be reused as long as no other SAP system with that SID exists in the same account and region, ensuring proper system identification and integration with AWS services like Amazon EFS or Amazon FSx for SAP.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
The SID must be changed to a new value for the migration.
Why it's wrong here
SID can be kept if unique.
The SID must be at least 5 characters long.
Why it's wrong here
SID is typically 3 characters.
The SID must be registered with AWS.
Why it's wrong here
No registration required.
The SID must be unique within the AWS account and region.
Why this is correct
Duplicate SIDs are not allowed.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates may assume the SID must be changed or registered with AWS, but the actual prerequisite is uniqueness within the AWS account and region, not a global or external registration.
Detailed technical explanation
Under the hood, the SAP SID is a 3-character alphanumeric identifier used to name system components, such as the transport directory (e.g., /usr/sap/trans/SID) and database instance. In AWS, uniqueness per account and region prevents conflicts in shared resources like Amazon Route 53 DNS entries or Amazon EFS file system names, which are often derived from the SID. A real-world scenario is migrating a production SAP system with SID 'PRD' to AWS; if another 'PRD' system exists in the same account and region, the migration will fail until the conflict is resolved.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
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FAQ
Migration — This question tests Migration — Read the scenario before looking for a memorised answer..
The correct answer is: The SID must be unique within the AWS account and region. — Option D is correct because SAP requires that the System ID (SID) be unique within an AWS account and region to avoid conflicts with existing SAP systems. During migration, the same SID can be reused as long as no other SAP system with that SID exists in the same account and region, ensuring proper system identification and integration with AWS services like Amazon EFS or Amazon FSx for SAP.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This PAS-C01 practice question is part of Courseiva's free Amazon Web Services 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 PAS-C01 exam.
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