Backports DOCSP-39281 to v7.0 (#217)

Backports #212 
[Jira](https://jira.mongodb.org/browse/CLOUDP-237987)

[Build](https://workerpool-boxgs.mongodbstitch.com/pages/job.html?collName=queue&jobId=664cfe22cf5bec1c2979c581)

Author: erabil-mdb

source/core/system-alerts.txt

@@ -4,6 +4,10 @@ Manage System Alerts
 
 .. default-domain:: mongodb
 
+.. facet::
+   :name: genre
+   :values: tutorial
+
 .. contents:: On this page
    :local:
    :backlinks: none
@@ -283,6 +287,12 @@ Database Process
      - .. alert:: Successfully connected to a database backing the system
      - 
 
+   * - ``BACKINGDB_DEFAULTRW_CONCERN_VERIFICATION_FAILED``
+     - .. alert:: AppDB default Read/Write concerns are not set to recommended values
+     - Sent when the :manual:`read concern </reference/read-concern-local/>` for 
+       the :ref:`backing databases <backing-database>` is *not* ``"local"`` and 
+       the :manual:`write concern </reference/write-concern/>` is *not* ``w: "majority"``. 
+
 Log
 ~~~