module.ldif create

cn=config listing

[root@pxe1kvm cn=config]# ls -alt
total 24
drwxr-x---. 3 ldap ldap 4096 Jul  2 16:52 .
-rw-------. 1 ldap ldap  740 Jul  2 16:52 olcDatabase={2}hdb.ldif
-rw-------. 1 ldap ldap  562 Jul  2 15:44 olcDatabase={1}monitor.ldif
-rw-------. 1 ldap ldap  513 Jul  2 15:44 olcDatabase={0}config.ldif
drwxr-x---. 2 ldap ldap   28 Jul  2 15:44 cn=schema
-rw-------. 1 ldap ldap  408 Jul  2 15:44 olcDatabase={-1}frontend.ldif
-rw-------. 1 ldap ldap  378 Jul  2 15:44 cn=schema.ldif
drwxr-x---. 3 ldap ldap   43 Feb 26 03:09 ..

no olcDatabase={x}module.ldif file

I try to create one with

dn: cn=module{0},cn=config
 changetype: modify
 add: olcModuleLoad
 olcModuleLoad: {0}/usr/lib64/openldap/memberof.la

but it fails with

ldapmodify -Y EXTERNAL -H ldapi:/// -v -f ldapMdynalist.ldif
ldap_initialize( ldapi:///??base )
SASL/EXTERNAL authentication started
SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth
SASL SSF: 0
add olcModuleLoad:
        {0}/usr/lib64/openldap/memberof.la
modifying entry "cn=module{0},cn=config"
ldap_modify: No such object (32)
        matched DN: cn=config

how do you add the modules file