diff --git a/specification/advisor/resource-manager/Microsoft.Advisor/stable/2020-01-01/advisor.json b/specification/advisor/resource-manager/Microsoft.Advisor/stable/2020-01-01/advisor.json
index b23e5c9cde79..d0072c3f6c55 100644
--- a/specification/advisor/resource-manager/Microsoft.Advisor/stable/2020-01-01/advisor.json
+++ b/specification/advisor/resource-manager/Microsoft.Advisor/stable/2020-01-01/advisor.json
@@ -541,6 +541,12 @@
             "schema": {
               "$ref": "#/definitions/SuppressionContract"
             }
+          },
+          "404": {
+            "description": "Suppression name is not specified or Suppression Id not found.",
+            "schema": {
+              "$ref": "#/definitions/ARMErrorResponseBody"
+            }
           }
         },
         "deprecated": false,
@@ -1189,6 +1195,12 @@
         "ttl": {
           "description": "The duration for which the suppression is valid.",
           "type": "string"
+        },
+        "expirationTimeStamp": {
+          "readOnly": true,
+          "format": "date-time",
+          "description": "Gets or sets the expiration time stamp.",
+          "type": "string"
         }
       }
     },
diff --git a/specification/advisor/resource-manager/Microsoft.Advisor/stable/2020-01-01/examples/GetSuppressionDetail.json b/specification/advisor/resource-manager/Microsoft.Advisor/stable/2020-01-01/examples/GetSuppressionDetail.json
index 3d24f3ce31ce..a98db919f2cd 100644
--- a/specification/advisor/resource-manager/Microsoft.Advisor/stable/2020-01-01/examples/GetSuppressionDetail.json
+++ b/specification/advisor/resource-manager/Microsoft.Advisor/stable/2020-01-01/examples/GetSuppressionDetail.json
@@ -13,9 +13,16 @@
         "type": "Microsoft.Advisor/suppressions",
         "properties": {
           "suppressionId": "suppressionId1",
-          "ttl": "7.00:00:00"
+          "ttl": "7.00:00:00",
+          "expirationTimeStamp": "2020-10-25T22:24:43.3216408Z"
         }
       }
+    },
+    "404": {
+      "body": {
+        "code": "NotFound",
+        "message": "Suppression name is not specified or Suppression Id not found"
+      }
     }
   }
 }
diff --git a/specification/advisor/resource-manager/Microsoft.Advisor/stable/2020-01-01/examples/ListSuppressions.json b/specification/advisor/resource-manager/Microsoft.Advisor/stable/2020-01-01/examples/ListSuppressions.json
index 159b0d143abd..8e8de9794f49 100644
--- a/specification/advisor/resource-manager/Microsoft.Advisor/stable/2020-01-01/examples/ListSuppressions.json
+++ b/specification/advisor/resource-manager/Microsoft.Advisor/stable/2020-01-01/examples/ListSuppressions.json
@@ -14,7 +14,8 @@
             "type": "Microsoft.Advisor/suppressions",
             "properties": {
               "suppressionId": "suppressionId1",
-              "ttl": "7.00:00:00"
+              "ttl": "7.00:00:00",
+              "expirationTimeStamp": "2020-10-24T22:24:43.3216408Z"
             }
           },
           {
@@ -23,7 +24,8 @@
             "type": "Microsoft.Advisor/suppressions",
             "properties": {
               "suppressionId": "suppressionId2",
-              "ttl": "7.00:00:00"
+              "ttl": "7.00:00:00",
+              "expirationTimeStamp": "2020-10-25T22:24:43.3216408Z"
             }
           }
         ]