LOCATE Original User - Table BKPF: USNAM = SAP_WFRT and TCODE = MIRO

I request to make a study to supply AP performance, nevertheless astir of the AP Invoice transactions is done by Workflow/Batch processing however bash one find the archetypal idiosyncratic to find performance? 

I americium utilizing array BKPF but the lone USNAM one find for Transaction TYPE KR is the workflow.