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

[AColeman]

I need to create a report to provide AP performance, however most of the AP Invoice transactions is done by Workflow/Batch processing how do i find the original user to determine performance? 

I am using table BKPF but the only USNAM i find for Transaction TYPE KR is the workflow.

[shkwaseem86]

Use the agent id (approver) from field WI_AAGENT of the table SWWWIHEAD.

[AColeman]

Thank for the response but in this table the WI_AAGENT is also SAP_WFRT