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The sn surname is one of the standard LDAP attibutes attributes defined in RFC 2256 that UCLA Enterprisee Directory adpots. According to RFC 2256, sn, also known as X.500 surname, "contains the family name of a person." In the context of UCLA ED, this is the last name of the person represented by the identity entry in the UCLA Enterprise Directory.


The Enterprise Directory retrieves LAST_NAME_PERSON from the UID system via the Campus Data Warehouse (CDW) in realtime real-time manner. For each person, the UID system contains names recorded at 4 different university systems. They are Student Record System (SRS), Student Information System (SIS), Payroll Personnel System (PPS), and University Extension System (UNEX). Names from these systems are flagged in APP_ID field accordiingly accordingly as SR0, SI0, PP0, and UNX. The Enterprise Directory select the name to populate cn base on the following logic:


For students, contact data owner UCLA RegistrarorRegistrar's Office.
For employees, contact data owner UCLA Payroll Office.
For ASUCLA employees, contact data owner ASUCLA payroll office.