ArcGIS Pro 2.8 API Reference Guide
CompleteStep(String) Method
Example 

ArcGIS.Desktop.Workflow.Models.JobModels Namespace > Job Class : CompleteStep(String) Method
The ID of the step to mark as complete. If no step is specified, the current step will be marked as complete
Marks the specified step as complete
Syntax
public WorkflowExecutionResult CompleteStep( 
   string stepID
)
Public Function CompleteStep( _
   Optional ByVal stepID As String _
) As WorkflowExecutionResult

Parameters

stepID
The ID of the step to mark as complete. If no step is specified, the current step will be marked as complete

Return Value

Information on the return code and errors during completion
Remarks
User should ensure the result of CanCompleteStepAsync is true prior to completing the step.
Example
Complete the current step and check for an exception
WorkflowExecutionResult result = job.CompleteStep();
// Check if the step threw an exception
if (result.Exception != null)
{
    // Throw it for a higher level to deal with
    throw result.Exception;
}
if (result.HasReturnCode)
{
    return result.ReturnCode;
}
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

Job Class
Job Members