Fix documentation and logging

openedx/core/djangoapps/user_api/accounts/permissions.py

@@ -28,8 +28,7 @@ class CanRetireUser(permissions.BasePermission):
 
 class CanReplaceUsername(permissions.BasePermission):
     """
-    Grants access to the Username Replacement API for anyone in the group,
-    including the service user.
+    Grants access to the Username Replacement API for the service user.
     """
     def has_permission(self, request, view):
         return request.user.username == getattr(settings, "USERNAME_REPLACEMENT_WORKER", False)

openedx/core/djangoapps/user_api/accounts/views.py

@@ -1148,9 +1148,10 @@ class UsernameReplacementView(APIView):
                     )
         except Exception as exc:  # pylint: disable=broad-except
             log.exception(
-                u"Unable to change username from %s to %s. Reason: %s",
+                u"Unable to change username from %s to %s. Failed on table %s because %s",
                 current_username,
                 new_username,
+                model.__class__.__name__,  # Retrieves the model name that it failed on
                 exc
             )
             return False