diff --git a/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/Microsoft.ResourceNotifications/ContainerServiceEventResources.tsp b/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/Microsoft.ResourceNotifications/ContainerServiceEventResources.tsp
new file mode 100644
index 000000000000..acd1866838d5
--- /dev/null
+++ b/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/Microsoft.ResourceNotifications/ContainerServiceEventResources.tsp
@@ -0,0 +1,16 @@
+import "@typespec/versioning";
+import "./common.tsp";
+using TypeSpec.Versioning;
+
+/**
+Describes the schema of the Container Service events published to Azure 
+Event Grid. This corresponds to the Data property of an EventGridEvent. 
+*/
+namespace Microsoft.EventGrid.SystemEvents;
+
+/**
+Schema of the Data property of an event grid event for a Microsoft.ResourceNotifications.ContainerServiceEventResources.ScheduledEventEmitted preview event.
+*/
+#suppress "@azure-tools/typespec-azure-core/composition-over-inheritance" "Maintain compatibility with existing models."
+model ResourceNotificationsContainerServiceEventResourcesScheduledEventData
+  extends ResourceNotificationsResourceUpdatedEventData {}
diff --git a/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/Microsoft.ResourceNotifications/client.tsp b/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/Microsoft.ResourceNotifications/client.tsp
index 8783a167984a..6fb9f8c92f70 100644
--- a/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/Microsoft.ResourceNotifications/client.tsp
+++ b/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/Microsoft.ResourceNotifications/client.tsp
@@ -2,6 +2,12 @@ import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 //Models
+@@usage(Microsoft.EventGrid.SystemEvents.ResourceNotificationsContainerServiceEventResourcesScheduledEventData,
+  Usage.output
+);
+@@access(Microsoft.EventGrid.SystemEvents.ResourceNotificationsContainerServiceEventResourcesScheduledEventData,
+  Access.public
+);
 @@usage(Microsoft.EventGrid.SystemEvents.ResourceNotificationsHealthResourcesAvailabilityStatusChangedEventData,
   Usage.output
 );
diff --git a/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/examples/2024-01-01/ContainerServiceEventResources_ScheduledEventEmitted.json b/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/examples/2024-01-01/ContainerServiceEventResources_ScheduledEventEmitted.json
new file mode 100644
index 000000000000..b58a3dc264ad
--- /dev/null
+++ b/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/examples/2024-01-01/ContainerServiceEventResources_ScheduledEventEmitted.json
@@ -0,0 +1,35 @@
+{
+  "id": "5bdb52cf-5489-4845-86c8-7fe94a4fc6c1",
+  "source": "/subscriptions/{subscription-id}",
+  "subject": "/subscriptions/{subscription-id}/resourceGroups/{rg-name}/providers/Microsoft.ContainerService/managedClusters/{managedcluster-name}/scheduledEvents/{event-id}",
+  "data": {
+    "resourceInfo": {
+      "id": "/subscriptions/{subscription-id}/resourceGroups/{rg-name}/providers/Microsoft.ContainerService/managedClusters/{managedcluster-name}/scheduledEvents/{event-id}",
+      "name": "{event-id}",
+      "type": "Microsoft.ContainerService/managedClusters/scheduledEvents",
+      "properties": {
+        "description": "ScheduledEvents",
+        "eventId": "bbe82027-0444-4f73-897a-0bbfe3af66f1",
+        "eventSource": "AutoUprader",
+        "eventStatus": "Started",
+        "eventDetails": "Start to upgrade security vhd",
+        "scheduledTime": "2024-04-16T22:17:12.103268606Z",
+        "startTime": "0001-01-01T00:00:00.0000000Z",
+        "lastUpdateTime": "0001-01-01T00:00:00.0000000Z",
+        "resources": [
+          "/subscriptions/{subscription-id}/resourcegroups/{rg-name}/providers/Microsoft.ContainerService/managedClusters/{managedcluster-name}"
+        ],
+        "resourceType": "ManagedCluster"
+      }
+    },
+    "operationalInfo": {
+      "resourceEventTime": "2024-04-16T22:17:12.1032748"
+    },
+    "apiVersion": "2023-11-02-preview"
+  },
+  "type": "Microsoft.ResourceNotifications.ContainerServiceEventResources.ScheduledEventEmitted",
+  "specversion": "1.0",
+  "time": "2024-04-16T22:17:12.1032748Z",
+  "operationId": "ContainerServiceEventResourcesScheduledEventEmittedEventName",
+  "title": "ContainerServiceEventResourcesScheduledEventEmitted"
+}
diff --git a/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/main.tsp b/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/main.tsp
index 09516b08cdc7..2529f98683c5 100644
--- a/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/main.tsp
+++ b/specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/main.tsp
@@ -25,6 +25,7 @@ import "./Microsoft.Web/Web.tsp";
 import "./Microsoft.EventGrid/EventGrid.tsp";
 import "./Microsoft.ResourceNotifications/HealthResources.tsp";
 import "./Microsoft.ResourceNotifications/Resources.tsp";
+import "./Microsoft.ResourceNotifications/ContainerServiceEventResources.tsp";
 
 import "./propertyNameOverride.tsp";
 
diff --git a/specification/eventgrid/data-plane/Microsoft.EventGrid/stable/2018-01-01/GeneratedSystemEvents.json b/specification/eventgrid/data-plane/Microsoft.EventGrid/stable/2018-01-01/GeneratedSystemEvents.json
index 6d2ef8958c3b..dacc3067b0b6 100644
--- a/specification/eventgrid/data-plane/Microsoft.EventGrid/stable/2018-01-01/GeneratedSystemEvents.json
+++ b/specification/eventgrid/data-plane/Microsoft.EventGrid/stable/2018-01-01/GeneratedSystemEvents.json
@@ -7509,6 +7509,15 @@
         }
       }
     },
+    "ResourceNotificationsContainerServiceEventResourcesScheduledEventData": {
+      "type": "object",
+      "description": "Schema of the Data property of an event grid event for a Microsoft.ResourceNotifications.ContainerServiceEventResources.ScheduledEventEmitted preview event.",
+      "allOf": [
+        {
+          "$ref": "#/definitions/ResourceNotificationsResourceUpdatedEventData"
+        }
+      ]
+    },
     "ResourceNotificationsHealthResourcesAnnotatedEventData": {
       "type": "object",
       "description": "Schema of the Data property of an EventGridEvent for a\nMicrosoft.ResourceNotifications.HealthResources.ResourceAnnotated event.",
diff --git a/specification/eventgrid/data-plane/Microsoft.EventGrid/stable/2024-01-01/GeneratedSystemEvents.json b/specification/eventgrid/data-plane/Microsoft.EventGrid/stable/2024-01-01/GeneratedSystemEvents.json
index 2686688afd8b..769555c8707b 100644
--- a/specification/eventgrid/data-plane/Microsoft.EventGrid/stable/2024-01-01/GeneratedSystemEvents.json
+++ b/specification/eventgrid/data-plane/Microsoft.EventGrid/stable/2024-01-01/GeneratedSystemEvents.json
@@ -7641,6 +7641,15 @@
         }
       }
     },
+    "ResourceNotificationsContainerServiceEventResourcesScheduledEventData": {
+      "type": "object",
+      "description": "Schema of the Data property of an event grid event for a Microsoft.ResourceNotifications.ContainerServiceEventResources.ScheduledEventEmitted preview event.",
+      "allOf": [
+        {
+          "$ref": "#/definitions/ResourceNotificationsResourceUpdatedEventData"
+        }
+      ]
+    },
     "ResourceNotificationsHealthResourcesAnnotatedEventData": {
       "type": "object",
       "description": "Schema of the Data property of an EventGridEvent for a\nMicrosoft.ResourceNotifications.HealthResources.ResourceAnnotated event.",
diff --git a/specification/eventgrid/data-plane/Microsoft.ResourceNotifications/stable/2018-01-01/ContainerServiceEventResources.json b/specification/eventgrid/data-plane/Microsoft.ResourceNotifications/stable/2018-01-01/ContainerServiceEventResources.json
new file mode 100644
index 000000000000..090af0983a97
--- /dev/null
+++ b/specification/eventgrid/data-plane/Microsoft.ResourceNotifications/stable/2018-01-01/ContainerServiceEventResources.json
@@ -0,0 +1,28 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "2018-01-01",
+    "title": "Schema of Container Service events published to Azure Event Grid via Azure Resource Notifications",
+    "description": "Describes the schema of the Container Service events published to Azure Event Grid. This corresponds to the Data property of an EventGridEvent."
+  },
+  "paths": {},
+  "definitions": {
+    "ResourceNotificationsContainerServiceEventResourcesScheduledEventData": {
+      "description": "Schema of the Data property of an event grid event for a Microsoft.ResourceNotifications.ContainerServiceEventResources.ScheduledEventEmitted preview event.",
+      "type": "object",
+      "allOf": [
+        {
+          "$ref": "./common.json#/definitions/ResourceNotificationsResourceUpdatedEventData"
+        }
+      ],
+      "x-ms-examples": {
+        "ResourceNotificationsContainerServiceEventResourcesScheduledEmittedEventGridSchema": {
+          "$ref": "./examples/event-grid-schema/ContainerServiceEventResources_ScheduledEventEmitted.json"
+        },
+        "ResourceNotificationsContainerServiceEventResourcesScheduledEventEmittedCloudEventsSchema": {
+          "$ref": "./examples/cloud-events-schema/ContainerServiceEventResources_ScheduledEventEmitted.json"
+        }
+      }
+    }
+  }
+}
diff --git a/specification/eventgrid/data-plane/Microsoft.ResourceNotifications/stable/2018-01-01/examples/cloud-events-schema/ContainerServiceEventResources_ScheduledEventEmitted.json b/specification/eventgrid/data-plane/Microsoft.ResourceNotifications/stable/2018-01-01/examples/cloud-events-schema/ContainerServiceEventResources_ScheduledEventEmitted.json
new file mode 100644
index 000000000000..e3766239a8e3
--- /dev/null
+++ b/specification/eventgrid/data-plane/Microsoft.ResourceNotifications/stable/2018-01-01/examples/cloud-events-schema/ContainerServiceEventResources_ScheduledEventEmitted.json
@@ -0,0 +1,33 @@
+{
+  "id": "5bdb52cf-5489-4845-86c8-7fe94a4fc6c1",
+  "source": "/subscriptions/{subscription-id}",
+  "subject": "/subscriptions/{subscription-id}/resourceGroups/{rg-name}/providers/Microsoft.ContainerService/managedClusters/{managedcluster-name}/scheduledEvents/{event-id}",
+  "data": {
+    "resourceInfo": {
+      "id": "/subscriptions/{subscription-id}/resourceGroups/{rg-name}/providers/Microsoft.ContainerService/managedClusters/{managedcluster-name}/scheduledEvents/{event-id}",
+      "name": "{event-id}",
+      "type": "Microsoft.ContainerService/managedClusters/scheduledEvents",
+      "properties": {
+        "description": "ScheduledEvents",
+        "eventId": "bbe82027-0444-4f73-897a-0bbfe3af66f1",
+        "eventSource": "AutoUprader",
+        "eventStatus": "Started",
+        "eventDetails": "Start to upgrade security vhd",
+        "scheduledTime": "2024-04-16T22:17:12.103268606Z",
+        "startTime": "0001-01-01T00:00:00.0000000Z",
+        "lastUpdateTime": "0001-01-01T00:00:00.0000000Z",
+        "resources": [
+          "/subscriptions/{subscription-id}/resourcegroups/{rg-name}/providers/Microsoft.ContainerService/managedClusters/{managedcluster-name}"
+        ],
+        "resourceType": "ManagedCluster"
+      }
+    },
+    "operationalInfo": {
+      "resourceEventTime": "2024-04-16T22:17:12.1032748"
+    },
+    "apiVersion": "2023-11-02-preview"
+  },
+  "type": "Microsoft.ResourceNotifications.ContainerServiceEventResources.ScheduledEventEmitted",
+  "specversion": "1.0",
+  "time": "2024-04-16T22:17:12.1032748Z"
+}
diff --git a/specification/eventgrid/data-plane/Microsoft.ResourceNotifications/stable/2018-01-01/examples/event-grid-schema/ContainerServiceEventResources_ScheduledEventEmitted.json b/specification/eventgrid/data-plane/Microsoft.ResourceNotifications/stable/2018-01-01/examples/event-grid-schema/ContainerServiceEventResources_ScheduledEventEmitted.json
new file mode 100644
index 000000000000..3b58707cfd3e
--- /dev/null
+++ b/specification/eventgrid/data-plane/Microsoft.ResourceNotifications/stable/2018-01-01/examples/event-grid-schema/ContainerServiceEventResources_ScheduledEventEmitted.json
@@ -0,0 +1,35 @@
+{
+  "id": "5bdb52cf-5489-4845-86c8-7fe94a4fc6c1",
+  "topic": "/subscriptions/{subscription-id}",
+  "subject": "/subscriptions/{subscription-id}/resourcegroups/{rg-name}/providers/Microsoft.ContainerService/managedClusters/{managedcluster-id}/scheduledEvents/{event-id}",
+  "data": {
+    "resourceInfo": {
+      "id": "/subscriptions/{subscription-id}/resourcegroups/{rg-name}/providers/Microsoft.ContainerService/managedClusters/{managedcluster-id}/scheduledEvents/{event-id}",
+      "name": "{event-id}",
+      "type": "Microsoft.ContainerService/managedClusters/scheduledEvents",
+      "location": "westus2",
+      "properties": {
+        "description": "ScheduledEvents",
+        "eventId": "bbe82027-0444-4f73-897a-0bbfe3af66f1",
+        "eventSource": "AutoUprader",
+        "eventStatus": "Started",
+        "eventDetails": "Start to upgrade security vhd",
+        "scheduledTime": "2024-04-16T22:17:12.103268606Z",
+        "startTime": "0001-01-01T00:00:00.0000000Z",
+        "lastUpdateTime": "0001-01-01T00:00:00.0000000Z",
+        "resources": [
+          "/subscriptions/{subscription-id}/resourcegroups/{rg-name}/providers/Microsoft.ContainerService/managedClusters/{managedcluster-id}"
+        ],
+        "resourceType": "ManagedCluster"
+      }
+    },
+    "operationalInfo": {
+      "resourceEventTime": "2024-04-16T22:17:12.1032748"
+    },
+    "apiVersion": "2023-11-02-preview"
+  },
+  "eventType": "Microsoft.ResourceNotifications.ContainerServiceEventResources.ScheduledEventEmitted",
+  "dataVersion": "1",
+  "metadataVersion": "1",
+  "eventTime": "2024-04-16T22:17:12.1032748Z"
+}
diff --git a/specification/eventgrid/data-plane/readme.md b/specification/eventgrid/data-plane/readme.md
index 43b0465c00e3..372db9e9e967 100644
--- a/specification/eventgrid/data-plane/readme.md
+++ b/specification/eventgrid/data-plane/readme.md
@@ -142,6 +142,7 @@ input-file:
 - Microsoft.ResourceNotifications/stable/2018-01-01/common.json
 - Microsoft.ResourceNotifications/stable/2018-01-01/HealthResources.json
 - Microsoft.ResourceNotifications/stable/2018-01-01/Resources.json
+- Microsoft.ResourceNotifications/stable/2018-01-01/ContainerServiceEventResources.json
 - Microsoft.AVS/stable/2018-01-01/PrivateCloud.json
 - Microsoft.ApiCenter/stable/2018-01-01/ApiCenter.json
 ```