Error Route
Managing and recovering from errors is a critical concern for any enterprise system. Dovetail addresses this concern directly: every flow has an Error Route with a FailedExchange component. All failed exchanges from a flow are routed to this FailedExchange component.
Additional information about errors, referred to as exceptions, can be retrieved from these failed exchanges. You can create a flow within the Error Route to log, monitor, and/or report these exceptions. Additionally, you can create a flow to handle failed exchanges functionally.
Exceptions originating in the Error Route are only shown in the Flow logs. They are not handled by the FailedExchange component in the Error Route to prevent infinite loops. The typical use case for error handling in the Error Route should be simpler and less error-prone than for regular flows.
Refer to our Using exceptions guide for a full reference on exceptions and the expressions to retrieve them from a failed exchange.