/errors/goal_error.proto

--- v24/errors/goal_error.proto 2026-10-09 21:17:59.000000000 +0000
+++ v25/errors/goal_error.proto 2026-10-09 21:18:05.000000000 +0000
@@ -50,5 +50,19 @@

     // Only Google Ads account can have customer lifecycle optimization goal.
     CUSTOMER_LIFECYCLE_OPTIMIZATION_ACCOUNT_TYPE_NOT_ALLOWED = 7;
+
+    // New customer acquisition goal already exists.
+    NEW_CUSTOMER_ACQUISITION_GOAL_ALREADY_EXISTS = 8;
+
+    // Loyalty retention goal already exists.
+    LOYALTY_RETENTION_GOAL_ALREADY_EXISTS = 9;
+
+    // When using the customer lifecycle optimization goal, the value multiplier
+    // must be present if the high lifetime value multiplier is present.
+    HIGH_LIFETIME_VALUE_MULTIPLIER_PRESENT_BUT_VALUE_MULTIPLIER_ABSENT = 10;
+
+    // When using the customer lifecycle optimization goal, the high lifetime
+    // value multiplier must be strictly greater than the value multiplier.
+    HIGH_LIFETIME_VALUE_MULTIPLIER_LESS_THAN_OR_EQUAL_TO_VALUE_MULTIPLIER = 11;
   }
 }