The IAF configuration files distributed with the FIX adapter come with a standard set of event mappings that include all the messages defined in the FIX 4.2 - 4.4 specifications. Each message maps to a distinct Apama event in the com.apama.fix package.

Only fields that are either mandatory in the FIX specification or extremely common are mapped as top level fields. All other fields are mapped into the payload. This also works in reverse in that upstream (outgoing) events can set fields other than those defined as top levels fields by adding them to the payload.