diff --git a/automotive/vehicle/aidl/impl/proto/android/hardware/automotive/vehicle/VehiclePropValueRequest.proto b/automotive/vehicle/aidl/impl/proto/android/hardware/automotive/vehicle/VehiclePropValueRequest.proto
index b16daa8..749ad6a 100644
--- a/automotive/vehicle/aidl/impl/proto/android/hardware/automotive/vehicle/VehiclePropValueRequest.proto
+++ b/automotive/vehicle/aidl/impl/proto/android/hardware/automotive/vehicle/VehiclePropValueRequest.proto
@@ -18,9 +18,33 @@
 
 package android.hardware.automotive.vehicle.proto;
 
+import "android/hardware/automotive/vehicle/StatusCode.proto";
 import "android/hardware/automotive/vehicle/VehiclePropValue.proto";
 
 message VehiclePropValueRequest {
-    int32 request_id = 1;
+    int64 request_id = 1;
     VehiclePropValue value = 2;
 };
+
+message SetValueResult {
+    int64 request_id = 1;
+    StatusCode status = 2;
+};
+
+message GetValueResult {
+    int64 request_id = 1;
+    StatusCode status = 2;
+    VehiclePropValue value = 3;
+};
+
+message VehiclePropValueRequests {
+    repeated VehiclePropValueRequest requests = 1;
+};
+
+message SetValueResults {
+    repeated SetValueResult results = 1;
+};
+
+message GetValueResults {
+    repeated GetValueResult results = 1;
+};