Hi
Can you let us know what workflow have you designed? Is it approval of Parked Documents and then Posting them upon Approval? If yes, the event should be FIPP.CREATED and not COMPLETED. Correct me if I am wrong; but this is what I have designed so far for Parking WF.
If FIPP.CREATED is also not getting triggered in your system, then your FI consultant needs to look at the Parking SPRO config - if that is wrong, the FIPP events do not trigger.
On second thoughts, also do check if the event trace is ON - SWELS - with no restrictions.
Regards,
Modak