Load the edited LDAPAUTH.txt properties file
From a command prompt on the LMRK server, type
secadm -p sec_adm_pwd -f LDAPAUTH_LDAP2.txt
Note: If the command fails and the name of the LDAP user (DN_LDAP_user) is not in quotation marks, add them and rerun the command to see if this solves the problem.