/errors/ad_group_error.proto 

--- v15/errors/ad_group_error.proto 2024-02-20 20:29:00.000000000 +0000
+++ v16/errors/ad_group_error.proto 2024-02-20 20:29:02.000000000 +0000
@@ -87,5 +87,11 @@
     // The asset set type is invalid for setting the
     // excluded_parent_asset_set_types field.
     INVALID_EXCLUDED_PARENT_ASSET_SET_TYPE = 17;
+
+    // Cannot add ad groups for the campaign type.
+    CANNOT_ADD_AD_GROUP_FOR_CAMPAIGN_TYPE = 18;
+
+    // Invalid status for the ad group.
+    INVALID_STATUS = 19;
   }
 }