SLAPO-UNIQUE(5) File Formats Manual SLAPO-UNIQUE(5) (NAME) slapo-unique - Attribute Uniqueness slapd (SYNOPSIS) /etc/openldap/slapd.conf (DESCRIPTION) (Attribute Uniqueness) slapd-mdb(5) (scope) . . add modify modrdn . uid uid . . rootdn ACL . rootdn . (CONFIGURATION) slapd.conf . overlay . unique_uri <[strict ][ignore ][serialize ]URI[[ URI...]...]> base scope filter . URI . unique_uri olcUniqueURI URI ignore/strict . strict ignore serialize slapd.conf URI (") . LDAP URI RFC-4516 : ldap:///[base dn]?[attributes...]?scope[?filter] base dn base dn . base dn . attributes () URI . scope LDAP URI base . sub ( ) one ( ) . filter . ldap:///?cn?sub?(sn=e*) cn sn e . ignore . ( ) . attributes URI ignore objectClass dc ou o . strict . (null) . strict . (Strictness) URI . serialize (strict serialization) . . serialize . URI slapo-unique . . unique_base base dn unique_uri . unique_ignore unique_uri ignore . unique_attributes unique_uri . unique_strict strict unique_uri . (CAVEATS) unique_uri . unique_uri . URI ignore ldap:///... (hardcoded) . (Replication) relax . DIT . (FILES) /etc/openldap/slapd.conf slapd (SEE ALSO) slapd.conf(5), slapd-config(5). OpenLDAP 2.6.13 2026/03/09 SLAPO-UNIQUE(5)