/errors/ad_group_error.proto

--- v22/errors/ad_group_error.proto 2026-01-23 15:36:20.000000000 +0000
+++ v23/errors/ad_group_error.proto 2026-01-23 15:36:26.000000000 +0000
@@ -104,5 +104,18 @@

     // Only one AdGroup is allowed for each step ID in video ads sequencing.
     DUPLICATE_STEP_ID = 22;
+
+    // At least one Vertical Ads format must be enabled for a campaign under
+    // Travel Ads in Search Campaigns.
+    INVALID_VERTICAL_ADS_FORMAT_SETTING = 23;
+
+    // AI max setting must be enabled to enable Vertical Ads formats for a
+    // campaign under Travel Ads in Search Campaigns.
+    VERTICAL_ADS_FORMAT_SETTING_NOT_SUPPORTED_FOR_CAMPAIGNS_WITHOUT_AI_MAX = 24;
+
+    // An enabled travel feed must be linked to enable Vertical Ads formats for
+    // a campaign under Travel Ads in Search Campaigns.
+    VERTICAL_ADS_FORMAT_SETTING_NOT_SUPPORTED_FOR_CAMPAIGNS_WITHOUT_ENABLED_TRAVEL_FEED =
+        25;
   }
 }