Hi amit3416,

I have no idea where those steps come from, but there's a (little) bit more to it - well described in https://www.suse.com/de-de/support/kb/doc/?id=7016711 - see section "2) Update by using zypper" for step by step instructions.

> zypper addrepo --check --refresh --name 'SLES-SP4' #REPOURI

In case of continuing problems with the upgrade: Do I see it right that you're running this from a company-internal repository?