SUSE Manager with AD issue

Hello,
I am trying to configured SUMA 4 with LDAP as per
https://documentation.suse.com/external-tree/en-us/suma/4.0/suse-manager/administration/auth-methods.html but i am facing issues with PAM_LDAP.

suma:~ # pam-config --add --ldap
ERROR: module /lib64/security/pam_ldap.so is not installed.
pam-config: invalid option – --ldap
Try pam-config --help' or pam-config --usage’ for more information.
I am not able to find any package which can add LDAP into PAM at SLES 15SP1
Any suggestions are welcome. Thanks