ET count monitors on APM work only w/ retention filters (DataDog#19977)

GianlucaBortoli · aliciascott · web-flow · commit 0510eb1c3e64 · 2023-09-29T09:34:32.000-06:00
* ET count monitors on APM work only w/ retention filters

* fixing link

* Remove useless link

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Co-authored-by: aliciascott &lt;alicia.scott@datadoghq.com&gt;
Co-authored-by: Alicia Scott &lt;aliciascott@users.noreply.github.com&gt;
diff --git a/content/en/monitors/types/error_tracking.md b/content/en/monitors/types/error_tracking.md
@@ -61,6 +61,8 @@ Select **Web and Mobile Apps** from the dropdown menu. If you select **Backend S
 2. Construct a search query using the same logic as a [RUM Explorer search][1], [APM Explorer search][3], or [Log Explorer search][4] for the issues' error occurrences.
 3. Optionally, configure the alerting grouping strategy. For more information, see [Monitor Configuration][2].
 
+<div class="alert alert-info"><strong>Note</strong>: Count monitors for APM can only be created based on spans retained by <a href="/tracing/trace_pipeline/trace_retention/#create-your-own-retention-filter/">custom retention filters</a> (not the intelligent retention filter).</div>
+
 ### Set alert conditions
 
 Triggers when the error count is `above` or `above or equal to`. An alert is triggered whenever a metric crosses a threshold.
@@ -117,4 +119,4 @@ For more information about the **Notify your team** and **Say what's happening**
 [3]: https://app.datadoghq.com/monitors/create/error-tracking
 [4]: /monitors/configuration/#advanced-alert-conditions
 [5]: /monitors/notify/
-[6]: /logs/
+[6]: /logs/
