Trigger pipeline via REST API

Summary:

How to obtain the outbound file name from the log file after the pipeline has executed successfully? Is it possible to retrieve the outbound file name, and if so, how to configure it or what steps to follow to obtain it?

 

    "status": 1,
    "details": null,
    "jobId": 2061,
    "jobStatus": "FAILED",
    "logFileName": "outbox/logs/2061.log",
    "outputFileName": null,
    "processType": "PIPELINE_EXECUTE",
    "executedBy": "Admin"

Let say the file loaded have the name FCCS_Workiva.csv how should we get the output file name dynamically in the REST API command(

outputFileName": null

) in place of null