diff --git a/mmv1/products/datastream/Stream.yaml b/mmv1/products/datastream/Stream.yaml
index ce3fc2aba42d..93eb78a29400 100644
--- a/mmv1/products/datastream/Stream.yaml
+++ b/mmv1/products/datastream/Stream.yaml
@@ -1139,8 +1139,7 @@ properties:
             send_empty_value: true
             allow_empty_object: true
             immutable: true
-            exactly_one_of:
-              - destination_config.0.bigquery_destination_config.0.merge
+            conflicts:
               - destination_config.0.bigquery_destination_config.0.append_only
             description: |
               Merge mode defines that all changes to a table will be merged at the destination Google BigQuery
@@ -1152,9 +1151,8 @@ properties:
             send_empty_value: true
             allow_empty_object: true
             immutable: true
-            exactly_one_of:
+            conflicts:
               - destination_config.0.bigquery_destination_config.0.merge
-              - destination_config.0.bigquery_destination_config.0.append_only
             description: |
               AppendOnly mode defines that the stream of changes (INSERT, UPDATE-INSERT, UPDATE-DELETE and DELETE
               events) to a source table will be written to the destination Google BigQuery table, retaining the
diff --git a/mmv1/templates/terraform/examples/datastream_stream_bigquery.tf.erb b/mmv1/templates/terraform/examples/datastream_stream_bigquery.tf.erb
index 69ee2e02a249..ef6b95271498 100644
--- a/mmv1/templates/terraform/examples/datastream_stream_bigquery.tf.erb
+++ b/mmv1/templates/terraform/examples/datastream_stream_bigquery.tf.erb
@@ -106,7 +106,6 @@ resource "google_datastream_stream" "<%= ctx[:primary_resource_id] %>" {
                     kms_key_name = "<%= ctx[:vars]['bigquery_destination_table_kms_key_name'] %>"
                 }
             }
-            merge {}
         }
     }