Good Afternoon, I am in the process of building an LDAP schema which has a number of attributes which will be constrained to specific values. I have run into an issue where slaptest will build the ldif file without syntax errors, but when slapd starts up it can't find the X-ENUM syntax defined in the same file. # service slapd start Checking configuration files for slapd: [FAILED] olcAttributeTypes: value #0 olcAttributeTypes: Syntax not found: "1.3.6.1.4.1.39235.2.3.500" config error processing cn={5}test,cn=schema,cn=config: olcAttributeTypes: Syntax not found: "1.3.6.1.4.1.39235.2.3.500" slaptest: bad configuration file! [root@DNEAA18S2 openldap]# slapd -V @(#) $OpenLDAP: slapd 2.4.23 (Jan 28 2014 09:30:02) $ mockbuild(a)x86-022.build.eng.bos.redhat.com: /builddir/build/BUILD/openldap-2.4.23/openldap-2.4.23/build-servers/servers/slapd I have simplified the problem to a single syntax, attribute and object class. The .schema file and resulting ldif are attached. Is this a legitimate issue to report, or have I made some subtle syntax / contextual error that is preventing the attribute from finding the syntax? Cordially, -Mark Henning