CRM shows one email for a taxpayer while billing shows a different…

Question

CRM shows one email for a taxpayer while billing shows a different email for the same matched person. What should survivorship design do?

Accepted Answer

Choose the surviving email using explicit rules such as source trust, recency, or attribute-level priority—not an arbitrary coin flip. — When two systems argue about an email, you need a house rule—not a shrug. Survivorship is that house rule: which source wins for which field, and under what conditions. Coin flips and 'longer is better' are not governance.

Answer

Keep both emails as separate golden records so matching never collapses the person.

Answer

Always prefer the longer email string because length proves accuracy.

Answer

Discard email from the golden record entirely whenever any source disagrees.

CRM shows one email for a taxpayer while billing shows a different email for the same matched person. What should survivorship design do?

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