diff --git a/releasenotes/notes/rm-sched-host-mgr-class-load-2a86749a38f0688d.yaml b/releasenotes/notes/rm-sched-host-mgr-class-load-2a86749a38f0688d.yaml
index 57d744c3b902..662c5554ec4f 100644
--- a/releasenotes/notes/rm-sched-host-mgr-class-load-2a86749a38f0688d.yaml
+++ b/releasenotes/notes/rm-sched-host-mgr-class-load-2a86749a38f0688d.yaml
@@ -3,4 +3,6 @@ upgrade:
   - The ability to load a custom scheduler host manager via the
     ``scheduler_host_manager`` configuration option was deprecated
     in the 13.0.0 Mitaka release and is now removed in the 14.0.0 Newton
-    release.
+    release. Host managers can only be selected by name and not by full
+    class path. The allowed values are ``host_manager`` and
+    ``ironic_host_manager``.