Task "Cleanup packages on host" fails with the following output preventing the corresponding node deprovisioning from Operations Automation:
Command '/bin/rpm -e PACI-agent' execution failed with code 1: error: package PACI-agent is not installed
The issue is caused by the second attempt to delete packages on the host in scope of the same task. This behaviour is recognized as software-related issue #CCU-10409.
#CCU-10409 has been fixed in Operations Automation version 7.0.
In order to work around it, install PACI-agent on the node manually using
yum install PACI-agent and rerun the task.