diff --git a/cloud/azure/network/cdn/mode/request.pm b/cloud/azure/network/cdn/mode/request.pm
index 06358d5c5..4b4684325 100644
--- a/cloud/azure/network/cdn/mode/request.pm
+++ b/cloud/azure/network/cdn/mode/request.pm
@@ -36,6 +36,22 @@ sub get_metrics_mapping {
             'unit'   => '',
             'min'    => '0',
             'max'    => ''
+        },
+        'percentage4xx' => {
+            'output' => 'Percentage of 4XX',
+            'label'  => '4xx-requests-percentage',
+            'nlabel' => 'cdn.requests.4xx.percentage',
+            'unit'   => '%',
+            'min'    => '0',
+            'max'    => '100'
+        },
+        'percentage5xx' => {
+            'output' => 'Percentage of 5XX',
+            'label'  => '5xx-requests-percentage',
+            'nlabel' => 'cdn.requests.5xx.percentage',
+            'unit'   => '%',
+            'min'    => '0',
+            'max'    => '100'
         }
     };