diff --git a/sdk/eventgrid/azure-eventgrid/CHANGELOG.md b/sdk/eventgrid/azure-eventgrid/CHANGELOG.md
index 5fef29e01795..b9ebd38e51bb 100644
--- a/sdk/eventgrid/azure-eventgrid/CHANGELOG.md
+++ b/sdk/eventgrid/azure-eventgrid/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release History
 
-## 4.20.0 (2024-06-11)
+## 4.20.0 (2024-06-12)
 
 ### Features Added
 
diff --git a/sdk/eventgrid/azure-eventgrid/azure/eventgrid/_operations/_patch.py b/sdk/eventgrid/azure-eventgrid/azure/eventgrid/_operations/_patch.py
index 166c23e99d12..53855612b076 100644
--- a/sdk/eventgrid/azure-eventgrid/azure/eventgrid/_operations/_patch.py
+++ b/sdk/eventgrid/azure-eventgrid/azure/eventgrid/_operations/_patch.py
@@ -307,8 +307,8 @@ def _serialize_events(events):
             # Try to serialize CNCF Cloud Events
             return [_from_cncf_events(e) for e in events]
     else:
-        # Does not conform to format
-        raise TypeError("Invalid event data. Please check the data is of Cloud Event type/format and try again.")
+        # Does not conform to format, try to send
+        return events
 
 
 def _serialize_cloud_event(cloud_event):
diff --git a/sdk/eventgrid/azure-eventgrid/migration_guide.md b/sdk/eventgrid/azure-eventgrid/migration_guide.md
index 747d0746f29b..404e8a5aa69d 100644
--- a/sdk/eventgrid/azure-eventgrid/migration_guide.md
+++ b/sdk/eventgrid/azure-eventgrid/migration_guide.md
@@ -64,7 +64,7 @@ cloud_event = {
 
 | In v1.3 | Equivalent in v4.0 | Sample |
 |---|---|---|
-|`EventGridClient(credentials)`|`EventGridPublisherClient(endpoint, credential)`|[Sample for client construction](https://github.com/Azure/azure-sdk-for-python/blob/main/sdk/eventgrid/azure-eventgrid/samples/sync_samples/sample_publish_events_using_cloud_events_1.0_schema.py)|
+|`EventGridClient(credentials)`|`EventGridPublisherClient(endpoint, credential)`|[Sample for client construction](https://github.com/Azure/azure-sdk-for-python/blob/main/sdk/eventgrid/azure-eventgrid/samples/basic/sync_samples/sample_publish_events_using_cloud_events_1.0_schema.py)|
 
 ### Publishing Events
 
@@ -72,7 +72,7 @@ The `publish_events` API is replaced with `send` in v4.0. Additionally, `send` A
 
 | In v1.3 | Equivalent in v4.0 | Sample |
 |---|---|---|
-|`EventGridClient(credentials).publish_events(topic_hostname, events)`|`EventGridPublisherClient(endpoint, credential).send(events)`|[Sample for client construction](https://github.com/Azure/azure-sdk-for-python/blob/main/sdk/eventgrid/azure-eventgrid/samples/sync_samples/sample_publish_events_using_cloud_events_1.0_schema.py)|
+|`EventGridClient(credentials).publish_events(topic_hostname, events)`|`EventGridPublisherClient(endpoint, credential).send(events)`|[Sample for client construction](https://github.com/Azure/azure-sdk-for-python/blob/main/sdk/eventgrid/azure-eventgrid/samples/basic/sync_samples/sample_publish_events_using_cloud_events_1.0_schema.py)|
 
 ### Consuming Events
 
diff --git a/sdk/eventgrid/azure-eventgrid/tests/test_dual_client_async.py b/sdk/eventgrid/azure-eventgrid/tests/test_dual_client_async.py
index 47d3c66f234f..0e55ed91bfef 100644
--- a/sdk/eventgrid/azure-eventgrid/tests/test_dual_client_async.py
+++ b/sdk/eventgrid/azure-eventgrid/tests/test_dual_client_async.py
@@ -90,7 +90,7 @@ async def test_eg_dual_client_send_custom_event(self, **kwargs):
 
         await basic_client.send(custom_event)
 
-        with pytest.raises(TypeError):
+        with pytest.raises(HttpResponseError):
             await namespace_client.send(custom_event)
 
     @pytest.mark.live_test_only
diff --git a/sdk/eventgrid/azure-eventgrid/tests/test_eg_dual_client.py b/sdk/eventgrid/azure-eventgrid/tests/test_eg_dual_client.py
index 895609dc70d7..116f20928797 100644
--- a/sdk/eventgrid/azure-eventgrid/tests/test_eg_dual_client.py
+++ b/sdk/eventgrid/azure-eventgrid/tests/test_eg_dual_client.py
@@ -87,7 +87,7 @@ def test_eg_dual_client_send_custom_event(self, **kwargs):
 
         basic_client.send(custom_event)
 
-        with pytest.raises(TypeError):
+        with pytest.raises(HttpResponseError):
             namespace_client.send(custom_event)
 
     @pytest.mark.live_test_only