Earlier command and setup reference · Engine 18.6.0rc590 / Reader 8.11.0rc649
Definition
An account that is not listed under identity_resolution stays scoped to its own system. List a person’s accounts to join them across systems.
Join accounts through declared identity
A person may appear as a name in one export and an account identifier in another. Matching names alone do not establish identity. List the relevant accounts under identity_resolution.canonical_people when you have evidence that they belong to the same person.
Without that declaration, the account stays in its source system's scope. That preserves the distinction between two different people who happen to share an account label in different systems.
Check both joined and separate accounts
Review one known person with accounts in two systems and one pair of similar-looking accounts that must remain separate. Verify the source system and exact account value for each. If people remain separate unexpectedly, inspect person_identity_source_scoped and the mapping before treating the output as a count of unique people across systems.