FAQ: Why Do Results Differ Between Sources?

Answer #

Different sources may hold different data because they collect information for different purposes, update at different times, receive data from different contributors and apply different matching rules. A difference between sources should be reviewed before being treated as an error or fraud indicator.

Key points #

• One source may be more authoritative for a specific field than another.
• A source can be current for one attribute and incomplete for another.
• Timing delays can occur after a person changes details or after a contributor updates records.
• Matching rules affect whether a result appears as match, partial match or no match.

What to do next #

• Identify which source is authoritative for the disputed field.
• Review the original input data and supporting documents.
• Use the relevant dispute or correction process.
• Document the source used for any decision.

Public knowledge note: This article is intended as general education for verification, compliance, fraud prevention and responsible data-use discussions. It is not legal advice and should not replace your organisation’s own compliance review, regulator guidance, or contractual obligations.