Prior to the 8.5 release you needed to update the XML per your post above, however according to the support article you referenced if you are on 8.5.x this was moved into the Websphere configuration. This means you need WAS admin access to change this setting. The IBM support posting tells you how to set this configuration, with a note about system lane failure requiring the retry limit be set to 1.
-Andrew Paier
------------------------------
Andrew Paier
------------------------------
Original Message:
Sent: Wed October 02, 2019 11:04 AM
From: Joao Alexandre
Subject: How to get email notification when BPD instance fails
------------------------------
Joao Alexandre
Lisboa
------------------------------