diff --git a/_includes/nav.html b/_includes/nav.html
index 196d56d..e2e2ca1 100644
--- a/_includes/nav.html
+++ b/_includes/nav.html
@@ -18,6 +18,9 @@ <h2 class="gamma">Getting Started</h2>
         <li{% if page.body_class == 'recipe' %} class="active"{% endif %}>
             <a href="{{ site.baseurl }}/topics/recipes.html">Recipes</a>
         </li>
+        <li{% if page.body_class == 'errata' %} class="active"{% endif %}>
+            <a href="{{ site.baseurl }}/topics/errata.html">Errata</a>
+        </li>
     </ul>
     <h2 class="gamma">Application data</h2>
     <ul>
diff --git a/topics/errata.md b/topics/errata.md
new file mode 100644
index 0000000..df5edf8
--- /dev/null
+++ b/topics/errata.md
@@ -0,0 +1,22 @@
+---
+layout: site
+title: Errata
+body_class: errata
+---
+
+A list of known issues with data in Advanced MIS with a short explanation of the circumstances.
+
+### Reading List Events from 18th November to 30th November 2022
+
+List view and interaction events were not captured for a period of 12 days between 18th and 30th November 2022 inclusive. This will apply to events like `list.entry_point` and `list.item.click`. This means that student and staff clicks on a list and edit actions will not have been counted. An investigation has concluded that it is not possible to recreate events for this period.
+
+The list of affected events are as follows:
+
+* `list.entry_point`
+* `list.item.click`
+* `list.item.external_link.click`
+* `list.edit`
+* `list.item.report_broken_link`
+* `list.item.cancel_report_broken_link`
+
+All other list functions continued to work as normal and all edits to lists will have completed as expected.