Client Automation - Error "Only one instance of Patch Manager is allowed per Manager"

Products

• CA Client Automation - IT Client Manager
• CA Client Automation
• CA Client Automation - Patch Manager

Issue/Introduction

Only one instance of Patch Manager is allowed per Manager Error while trying to Uninstall/Reinstall of Patch Manager component from ISO. 

Environment

Client Automation - All Versions

Resolution

The problem could be in table ca_application_registration If UPM has been uninstalled but the next SQL Query returns 1 row.

Run the below query on mdb:

select * from ca_application_registration where product_code=2035

Execute Below query to remove the row :

delete from ca_application_registration where product_code=2035

Reboot the server and try the installation again