@CDS07 When the response to be returned by the connector is not immediately needed for further processing, consider using an error handler flow. Please remember that The error handler flow is not executed if the error is detected in the response data transform or in a transition in an activity.
@CDS07 This will be triggered only when the Connector is unable to establish a connection with the URL. For example, consider the server is down completely/ResourceUnavailable or if the endpoint URL is wrong, then this Problem Flow error rule will be triggered.
The following links contain the scenarios and in which scenario the Problem Flow rule will be triggered.