We don't intend to use this on other web applications except for web gui.
From what I understood, we create 2 values for "servicePrincipalName" for the user in AD. One for SNC interface for Gui and the other entry to web interface for web gui users and with SNC/SPNEGO configured, Kerberos keyTab also configured for SAPNEGO/SNC in ABAP , users should be able to login to gui and web gui.
That said, below are our current versions. Do we still have to upgrade kernel version?
S/W component Release Level Highest Support Package
SAP_BASIS 702 0012 SAPKB70212
Kernel
kernel make variant 720_REL , Unicode, AIX 64 BIT, Patch number 500.