Rob, I googled a bit more, and I think I misunderstood what you meant. You're right, when running 'ipa config-mod --enable-sid --add-sids', I *do* get an error in '/var/log/dirsrv/slapd-EXAMPLE-COM/errors', I do see the following:
[19/Sep/2023:21:33:28.535278863 -0400] - ERR - sidgen_task_thread - [file ipa_sidgen_task.c, line 194]: Sidgen task starts ... [19/Sep/2023:21:33:28.598913824 -0400] - ERR - find_sid_for_ldap_entry - [file ipa_sidgen_common.c, line 521]: Cannot convert Posix ID [1409438538] into an unused SID. [19/Sep/2023:21:33:28.600673160 -0400] - ERR - do_work - [file ipa_sidgen_task.c, line 154]: Cannot add SID to existing entry. [19/Sep/2023:21:33:28.604385987 -0400] - ERR - sidgen_task_thread - [file ipa_sidgen_task.c, line 199]: Sidgen task finished [32].
I'll try to figure out how to correct this.
Thanks.