/resources/customer_lifecycle_goal.proto

--- v18/resources/customer_lifecycle_goal.proto 2025-08-05 14:36:06.000000000 +0000
+++ v19/resources/customer_lifecycle_goal.proto 2025-08-05 14:36:20.000000000 +0000
@@ -50,7 +50,16 @@
   ];

   // Output only. Customer acquisition goal customer level value settings.
-  google.ads.googleads.v18.common.LifecycleGoalValueSettings
+  google.ads.googleads.v19.common.LifecycleGoalValueSettings
       customer_acquisition_goal_value_settings = 3
       [(google.api.field_behavior) = OUTPUT_ONLY];
+
+  // Output only. The resource name of the customer which owns the lifecycle
+  // goal.
+  string owner_customer = 4 [
+    (google.api.field_behavior) = OUTPUT_ONLY,
+    (google.api.resource_reference) = {
+      type: "googleads.googleapis.com/Customer"
+    }
+  ];
 }