Understanding Data Imports in ServiceNow:
When importing data into ServiceNow, you need to determine how incoming data matches existing records to avoid duplication.
Coalescing fields are used to identify whether an incoming record already exists in the target table.
Why "Coalesce Fields" is the Correct Answer:
Coalescing means using specific fields as unique identifiers to determine if a record should be updated or inserted as a new record.
If a match is found based on the coalesce field, ServiceNow updates the existing record.
If no match is found, a new record is inserted.
Why Other Answers Are Incorrect:
A . Match Fields → Not an official ServiceNow term related to import sets. Matching is done through coalescing, but "Match Fields" is not the correct terminology.
C . Key Fields → This is a general database term, but in ServiceNow, "Coalesce Fields" is the term used for identifying unique keys during imports.
D . Sys IDs → The Sys ID is a unique identifier for each record in ServiceNow, but it is not used for coalescing unless explicitly set as the coalesce field.
Best Practice Solution:
Set a single or multiple fields as coalesce fields in the Transform Map to ensure proper data deduplication.
Navigate to System Import Sets → Transform Maps, select the relevant transform map, and mark the coalescing fields.
Reference:
ServiceNow Docs: Coalescing Fields in Data Imports
ServiceNow CSA Documentation on Data Imports & Transform Maps