EXTERNALCALLOUT is a function available to you when working with custom macros in Decision, Select, and Snapshot processes in interactive flowcharts. EXTERNALCALLOUT lets you make a synchronous call to an external service, for example, to request the credit score for a particular audience level.

To use external callouts, you must write the external service in Java™ using the IAffiniumExternalCallout interface. For more details about the IAffiniumExternalCallout, see the Interact Administrator's Guide.