Hi Malcom,
Thank you for your response, here is our situation our servers have no internet connectivity and we cannot install SLES for SAP Application module all i am able to do is a base SLES15 installation without registration.what we wanted to understand is if there was a way to directly install SLES15 for SAP Applications without registration to SCC portal from the packages CD .

Right now the only we i can do this is in 2 steps
1) Install Base SLES15 operating system
2) Configure porxy and register server to SCC portal
3) Install the SLES15 for SAP Applications module

Our End Goal is to use SUSE manager to do auto installations for SLES15 for SAP Applications