According to the current UIM support matrix, RHEL version 9 is not supported by the UIM robot. It is currently confirmed by dev to be certified from 20.4 CU4 and the documentation will be updated to reflect this.
Environment
Release: UIM 20.4.X
Component: Robot
Red Hat 9
Resolution
This certification is available starting with 20.4 CU4. (robot 9.36 and higher)
Additional Information
The compatibility document will be updated to reflect this going forward.