On a new EL8 IPA server:
(Tue Feb 25 10:51:49 2020) [sssd[be[nwra.com]]] [ipa_get_ad_override_connect_done] (0x0040): dp_id_data_to_override_filter failed. (Tue Feb 25 10:51:49 2020) [sssd[be[nwra.com]]] [ipa_subdomain_account_got_override] (0x0040): IPA override lookup failed: 1432158283
(Tue Feb 25 10:51:49 2020) [sssd[nss]] [cache_req_common_process_dp_reply] (0x0040): CR #285589: Data Provider Error: 3, 1432158283, The internal name format cannot be parsed
sssd-2.2.0-19.el8.x86_64 ipa-server-4.8.0-13.module+el8.1.0+4923+c6efe041.x86_64