User Mapping using Custom User Attribute of LDAP in NetWeaver Portal to access ABAP Systems.
Client’s LDAP directory is connected to NetWeaver Portal 7.0 but since the username’s in LDAP directory are more than 12 Chars, it will be problematic for Users having name with more 12 chars to establish SSO between Portal and R/3 System. To make the SSO possible, User Mapping was performed on Portal Side. My blog demonstrate the steps to achieve this.
Read the source article at SAP Network Blog