Get an address book entry

Client identifier (UUID) assigned when an onboarding case is created. It identifies the onboarding case and, once active, the client's Client Account API resources. The client must belong to your partnership; anyone else's id returns 404.

Identifier of the external account in the selected client's address book (UUID).

Optional identifier for tracing a request end to end. A UUID is recommended. Axiym returns it in the X-Request-Id response header and records it in logs. If omitted, Axiym generates one. Include it when contacting support.