To add support for audit, CA:FeX actors are recommended to be grouped with CA:Aud actors (see Cross Profile Considerations / Canadian Audit Trail (CA:Aud) Grouping).
Alternatively, other non-IHE methods can be used to record audit messages, that do not require grouping with CA:Aud actors.
The audit criteria are defined for each actor that participates in a CA:FeX transaction.