/services/recommendation_service.proto

--- v24/services/recommendation_service.proto   2026-09-23 01:11:58.000000000 +0000
+++ v25/services/recommendation_service.proto   2026-09-23 01:12:01.000000000 +0000
@@ -249,6 +249,22 @@
     double target_roas_multiplier = 1 [(google.api.field_behavior) = REQUIRED];
   }

+  // Parameters to use when applying Raise Target CPA Performance Bid Too Low
+  // recommendations.
+  message RaiseTargetCpaPerformanceBidTooLowParameters {
+    // Required. A number greater than 1.0 indicating the factor by which to
+    // increase the target CPA. This is a required field.
+    double target_cpa_multiplier = 1 [(google.api.field_behavior) = REQUIRED];
+  }
+
+  // Parameters to use when applying Lower Target ROAS Performance Bid Too Low
+  // recommendations.
+  message LowerTargetRoasPerformanceBidTooLowParameters {
+    // Required. A number less than 1.0 indicating the factor by which to
+    // decrease the target ROAS. This is a required field.
+    double target_roas_multiplier = 1 [(google.api.field_behavior) = REQUIRED];
+  }
+
   // Common parameters used when applying ad asset recommendations.
   message AdAssetApplyParameters {
     // Scope to apply the assets to.
@@ -437,6 +453,16 @@

     // Parameters to use when applying lead form asset recommendation.
     LeadFormAssetParameters lead_form_asset = 25;
+
+    // Parameters to use when applying Raise Target CPA Performance Bid Too Low
+    // recommendation.
+    RaiseTargetCpaPerformanceBidTooLowParameters
+        raise_target_cpa_performance_bid_too_low = 26;
+
+    // Parameters to use when applying Lower Target ROAS Performance Bid Too Low
+    // recommendation.
+    LowerTargetRoasPerformanceBidTooLowParameters
+        lower_target_roas_performance_bid_too_low = 27;
   }
 }