diff --git a/guides/doc-Release_Notes/topics/foreman.adoc b/guides/doc-Release_Notes/topics/foreman.adoc
index 4a14d67cc20..2d88bc3502a 100644
--- a/guides/doc-Release_Notes/topics/foreman.adoc
+++ b/guides/doc-Release_Notes/topics/foreman.adoc
@@ -44,3 +44,8 @@ For more information, see {AdministeringDocURL}limiting-host-resources[Limiting
 
 === UI component phase-outs
 - *Legacy AngularJS Pages* - Continued elimination of AngularJS-based UI components as part of All Hosts page redesign
+
+=== Application Centric Deployment (ACD) plugin removal with 3.17
+
+Foreman 3.17 does not support foreman_acd and smart_proxy_acd.
+Before upgrading from 3.16 to 3.17, uninstall the ACD plugin on your {ProjectServer} and {SmartProxyServers}.