/errors/campaign_conversion_goal_error.proto

--- v25/errors/campaign_conversion_goal_error.proto 2026-10-09 20:57:59.000000000 +0000
+++ v26/errors/campaign_conversion_goal_error.proto 2026-10-09 20:58:06.000000000 +0000
@@ -42,5 +42,17 @@

     // Performance Max campaign cannot use an included store sale campaign goal.
     CANNOT_USE_STORE_SALE_GOAL_FOR_PERFORMANCE_MAX_CAMPAIGN = 3;
+
+    // Local Services conversion goals cannot be unlinked from a Local Services
+    // Performance Max campaign.
+    CANNOT_UNLINK_LOCAL_SERVICES_GOAL_FROM_LOCAL_SERVICES_CAMPAIGN = 4;
+
+    // Non-Local Services conversion goals are not allowed for a Local Services
+    // Performance Max campaign.
+    GOAL_NOT_ALLOWED_FOR_LOCAL_SERVICES_CAMPAIGN = 5;
+
+    // Local Services conversion goals cannot be used on a non-Local Services
+    // campaign.
+    LOCAL_SERVICES_GOAL_NOT_ALLOWED_FOR_NON_LOCAL_SERVICES_CAMPAIGN = 6;
   }
 }