How do you handle the same person appearing differently in every system?

A customer is an account number in one system, an email address in another, and a misspelled name in a third. Without reconciliation, retrieval returns fragments that cannot be assembled and entitlement cannot be evaluated reliably — and in AI the exposure compounds, because retrieval may combine fragments that were each individually safe.

Harmonization resolves identity as part of the ingestion transformation in Centralpoint, so entitlement is evaluated against a resolved subject rather than a system-local identifier. The same reconciliation is what turns a subject-access or erasure request from a per-system search into a query.