Index: trunk/data/validator/deprecated.mapcss
===================================================================
--- trunk/data/validator/deprecated.mapcss	(revision 10004)
+++ trunk/data/validator/deprecated.mapcss	(revision 10027)
@@ -803,2 +803,13 @@
   suggestAlternative: "sport=roller_skating";
 }
+
+way[barrier=wall][type=noise_barrier][!wall],
+way[barrier=wall][type=noise_barrier][wall=noise_barrier] {
+  throwWarning: tr("{0} is deprecated", "{1.tag}");
+  suggestAlternative: "wall=noise_barrier";
+  fixChangeKey: "type => wall";
+}
+way[barrier=wall][type=noise_barrier][wall][wall!=noise_barrier] {
+  throwWarning: tr("{0} is deprecated", "{1.tag}");
+  suggestAlternative: "wall=noise_barrier";
+}