SNOW-CSA Reporting, SLA and Imports Practice Question
Which import set transform operation should be used to prevent duplicate records from being created when the source data contains a unique identifier column?
⚠ Common exam trap
ServiceNow often tests the misconception that 'Ignore' or 'Default value' can prevent duplicates, but the trap is that only Coalesce performs the actual deduplication by matching on a unique identifier, while the other options handle field-level transformations or exclusions without any record-matching logic.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Coalesce
(Coalesce) is correct because the Coalesce transform operation in ServiceNow import sets is specifically designed to prevent duplicate records by matching on a unique identifier column. When configured, Coalesce checks if a record with the same value in the specified field already exists in the target table; if it does, the import updates the existing record instead of creating a duplicate.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Default value
Why it's wrong here
Sets value but does not prevent duplicates.
- ✗
Ignore
Why it's wrong here
Skips mapping entirely.
- ✓
Coalesce
Why this is correct
Coalesce uses a field to match existing records.
- ✗
Run script
Why it's wrong here
Does not prevent duplicates natively.
Go deeper
Related to this question
About these practice questions
One of 504 original SNOW-CSA practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SNOW-CSA practice question is part of Courseiva's free ServiceNow 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 SNOW-CSA exam.