Index: /trunk/data/validator/deprecated.mapcss
===================================================================
--- /trunk/data/validator/deprecated.mapcss	(revision 15965)
+++ /trunk/data/validator/deprecated.mapcss	(revision 15966)
@@ -1946,2 +1946,9 @@
   fixAdd: "navigationaid=als";
 }
+
+/* #18819 */
+node[exit_to] {
+  throwWarning: tr("{0} is deprecated", "{0.key}");
+  suggestAlternative: "destination";
+  group: tr("deprecated tagging");
+}