Hi Lewis,
I have identified the problem now. The problem was that python311-dbm’s latest version was required by 2 other packages. But it was not yet released for SLES 15 SP4.
The new update have recently been published for 15 SP4:
Now my problem has been resolved.
In conclusion, it was just a dependency issue where the latest version of dependency was not yet released.
Thank you for your time and help Lewis.
Regards.