!!! Overview [{$pagename}], which is [LDAP Result Code] 19, implies there is a constraint on the operation that is being attempted. Unfortunately, few [LDAP Server Implementations] provide meaningful information on why the [{$pagename}] was applied. !! [Microsoft Active Directory] A typical error might shows as: {{{ Message: <ldap-err ldap-rc="19" ldap-rc-name="LDAP_CONSTRAINT_VIOLATION"> <client-err ldap-rc="19" ldap-rc-name="LDAP_CONSTRAINT_VIOLATION">Constraint Violation</client-err> <server-err>00002081: AtrErr: DSID-031513A5, #1: 0: 00002081: DSID-031513A5, problem 1005 (CONSTRAINT_ATT_TYPE), data 0, Att 3 (cn) }}} Where the "CONSTRAINT_ATT_TYPE" and "(cn)" imply there is a constraint an the value or values that are attempting to be set for [cn] !! More Information There might be more information for this subject on one of the following: [{ReferringPagesPlugin before='*' after='\n' }]