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PWP is the only WP assigned a port number, other WPs at 0
Article ID: 185689
CA Automic Workload Automation - Automation EngineCA Automic One Automation
From the screenshot below, only the Primary Work Process or PWP is being assigned a port number. Other WPs are assigned port 0 (zero).
Release : 12.3
Component : Automation Engine
It is normal behavior in v12.3 that only the Primary Work Process has a defined port number in UCsrv.ini file. In fact, other WPs will connect to the PWP and to the CPs. Therefore, you do not have to assign ports for WPs in INI file of the AE. This behavior is explained in section "Work Processes (WP) and Primary Work Process (PWP)".