Migrating SLES OpenLDAP to 389-DS using openldap_to_ds

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As SLES15 stopped support of OpenLDAP, suggesting to use 389-DS instead, I tried to migrate my databases following the guide provided with SLES15 SP3. However the command to (test-)convert the configuration failed with a double fault like this:

# openldap_to_ds TEST1 /tmp/slapd.d /tmp/dump.ldif
Examining OpenLDAP Configuration ...
Traceback (most recent call last):
  File "/usr/sbin/openldap_to_ds", line 250, in <module>
    result = do_migration(inst, log, args, skip_overlays)
  File "/usr/sbin/openldap_to_ds", line 178, in do_migration
    config = olConfig(args.slapd_config, log)
  File "/usr/lib/python3.6/site-packages/lib389/migrate/openldap/", line 307, in __init__
    for db in dbs
  File "/usr/lib/python3.6/site-packages/lib389/migrate/openldap/", line 307, in <listcomp>
    for db in dbs
  File "/usr/lib/python3.6/site-packages/lib389/migrate/openldap/", line 112, in __init__
    self.suffix = ensure_str(self.config[1]['olcSuffix'][0])
KeyError: 'olcSuffix'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/sbin/openldap_to_ds", line 257, in <module>
    log.error("Error: %s" % " - ".join(str(val) for val in msg.values()))
AttributeError: 'str' object has no attribute 'values'

Did any body succeed migration SLES12 SP5 OpenLDAP to SLES15 SP3 389-DS? If so what are the detailed instructions?


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