[RHUI4] yum install package on rhui client ends in "Unable to find a match"

Issue

Running yum/dnf install rpm package on rhui client ends in error even, when repositories on rhui are properly synced

#dnf install vim
Red Hat Enterprise Linux 8 for x86_64 - AppStream from RHUI (RPMs)                                                                                                                                                                                                                           4.0 kB/s | 328  B     00:00    
Red Hat Enterprise Linux 8 for x86_64 - BaseOS from RHUI (Source RPMs)                                                                                                                                                                                                                       4.3 kB/s | 328  B     00:00    
No match for argument: vim
Error: Unable to find a match: vim

#dnf repolist 
repo id                                                 repo name
rhui-rhel-8-for-x86_64-appstream-rhui-rpms              Red Hat Enterprise Linux 8 for x86_64 - AppStream from RHUI (RPMs)
rhui-rhel-8-for-x86_64-baseos-rhui-source-rpms          Red Hat Enterprise Linux 8 for x86_64 - BaseOS from RHUI (Source RPMs)