diff --git a/specification/billing/resource-manager/Microsoft.Billing/preview/2020-09-01-preview/billingPromotions.json b/specification/billing/resource-manager/Microsoft.Billing/preview/2020-09-01-preview/billingPromotions.json
index c04950dc4c18..ce04ec821cff 100644
--- a/specification/billing/resource-manager/Microsoft.Billing/preview/2020-09-01-preview/billingPromotions.json
+++ b/specification/billing/resource-manager/Microsoft.Billing/preview/2020-09-01-preview/billingPromotions.json
@@ -307,6 +307,15 @@
       "type": "object",
       "properties": {
         "properties": {
+          "x-ms-client-flatten": true,
+          "$ref": "#/definitions/PromotionCheckEligibilityResponsePromptionProperties"
+        }
+      }
+    },
+    "PromotionCheckEligibilityResponsePromptionProperties": {
+      "type": "object",
+      "properties": {
+        "promotion": {
           "x-ms-client-flatten": true,
           "$ref": "#/definitions/PromotionCheckEligibilityResponseProperties"
         }
diff --git a/specification/billing/resource-manager/Microsoft.Billing/preview/2020-09-01-preview/examples/PromotionCheckEligibility.json b/specification/billing/resource-manager/Microsoft.Billing/preview/2020-09-01-preview/examples/PromotionCheckEligibility.json
index 43526fa5852c..88619396486a 100644
--- a/specification/billing/resource-manager/Microsoft.Billing/preview/2020-09-01-preview/examples/PromotionCheckEligibility.json
+++ b/specification/billing/resource-manager/Microsoft.Billing/preview/2020-09-01-preview/examples/PromotionCheckEligibility.json
@@ -8,13 +8,15 @@
     "200": {
       "body": {
         "properties": {
-          "id": "wvd_promo_30p",
-          "name": "WVD 30 percent off",
-          "eligible": true,
-          "reason": "None",
-          "details": "",
-          "eligibilitySubscriptionId": "f6dc64c8-34bb-43d3-96b0-fd2b8c94f1c3",
-          "expiryDate": "2021-10-01"
+          "promotion": {
+            "id": "wvd_promo_30p",
+            "name": "WVD 30 percent off",
+            "eligible": true,
+            "reason": "None",
+            "details": "",
+            "eligibilitySubscriptionId": "f6dc64c8-34bb-43d3-96b0-fd2b8c94f1c3",
+            "expiryDate": "2021-10-01"
+          }
         }
       }
     }