String Process instance ID of the process instance that contains the failed step you want to restart.

String The step ID of the step you want to restart.

String The input data used to restart the failed step. If not specified, the input that was used previously will be used for the restart. You can get the previous step input using the pub.dbo.control.instance:getStepInput service, then modify that data as necessary.

String Optional. Username for the user that is restarting the failed step.