diff --git a/google/ads/googleads/v4/common/ad_type_infos.proto b/google/ads/googleads/v4/common/ad_type_infos.proto
index d2d8d9fb3..0628baeb9 100644
--- a/google/ads/googleads/v4/common/ad_type_infos.proto
+++ b/google/ads/googleads/v4/common/ad_type_infos.proto
@@ -444,8 +444,7 @@ message LegacyResponsiveDisplayAdInfo {
 
 // An app ad.
 message AppAdInfo {
-  // An optional text asset that, if specified, must always be displayed when
-  // the ad is served.
+  // Mandatory ad text.
   AdTextAsset mandatory_ad_text = 1;
 
   // List of text assets for headlines. When the ad serves the headlines will
diff --git a/google/ads/googleads/v4/common/bidding.proto b/google/ads/googleads/v4/common/bidding.proto
index ff1c6d7fa..0d4456de1 100644
--- a/google/ads/googleads/v4/common/bidding.proto
+++ b/google/ads/googleads/v4/common/bidding.proto
@@ -64,14 +64,14 @@ message ManualCpv {
 
 }
 
-// An automated bidding strategy that sets bids to help get the most conversions
-// for your campaign while spending your budget.
+// An automated bidding strategy to help get the most conversions for your
+// campaigns while spending your budget.
 message MaximizeConversions {
 
 }
 
-// An automated bidding strategy which tries to maximize conversion value
-// given a daily budget.
+// An automated bidding strategy to help get the most conversion value for your
+// campaigns while spending your budget.
 message MaximizeConversionValue {
   // The target return on ad spend (ROAS) option. If set, the bid strategy will
   // maximize revenue while averaging the target return on ad spend. If the
@@ -144,7 +144,10 @@ message TargetSpend {
   // A TargetSpend bidder will attempt to spend the smaller of this value
   // or the natural throttling spend amount.
   // If not specified, the budget is used as the spend target.
-  google.protobuf.Int64Value target_spend_micros = 1;
+  // This field is deprecated and should no longer be used. See
+  // https://ads-developers.googleblog.com/2020/05/reminder-about-sunset-creation-of.html
+  // for details.
+  google.protobuf.Int64Value target_spend_micros = 1 [deprecated = true];
 
   // Maximum bid limit that can be set by the bid strategy.
   // The limit applies to all keywords managed by the strategy.
diff --git a/google/ads/googleads/v4/common/criteria.proto b/google/ads/googleads/v4/common/criteria.proto
index 7fa375c6e..bd1bdfcf5 100644
--- a/google/ads/googleads/v4/common/criteria.proto
+++ b/google/ads/googleads/v4/common/criteria.proto
@@ -587,7 +587,8 @@ message LocationGroupInfo {
   // This is required and must be set in CREATE operations.
   google.protobuf.Int64Value radius = 3;
 
-  // Unit of the radius, miles and meters supported currently.
+  // Unit of the radius. Miles and meters are supported for geo target
+  // constants. Milli miles and meters are supported for feed item sets.
   // This is required and must be set in CREATE operations.
   google.ads.googleads.v4.enums.LocationGroupRadiusUnitsEnum.LocationGroupRadiusUnits radius_units = 4;
 }
diff --git a/google/ads/googleads/v4/enums/positive_geo_target_type.proto b/google/ads/googleads/v4/enums/positive_geo_target_type.proto
index d1ce48a12..8e1a88c5a 100644
--- a/google/ads/googleads/v4/enums/positive_geo_target_type.proto
+++ b/google/ads/googleads/v4/enums/positive_geo_target_type.proto
@@ -45,6 +45,8 @@ message PositiveGeoTargetTypeEnum {
 
     // Specifies that an ad is triggered if the user
     // searches for advertiser's targeted locations.
+    // This can only be used with Search and standard
+    // Shopping campaigns.
     SEARCH_INTEREST = 6;
 
     // Specifies that an ad is triggered if the user is in
diff --git a/google/ads/googleads/v4/errors/bidding_error.proto b/google/ads/googleads/v4/errors/bidding_error.proto
index c2d3d9a05..8663c1a17 100644
--- a/google/ads/googleads/v4/errors/bidding_error.proto
+++ b/google/ads/googleads/v4/errors/bidding_error.proto
@@ -57,11 +57,11 @@ message BiddingErrorEnum {
     // Bidding strategy is not available for the account type.
     BIDDING_STRATEGY_NOT_AVAILABLE_FOR_ACCOUNT_TYPE = 18;
 
-    // Conversion tracking is not enabled in the campaign that has YouTube
-    // Video Builder transitions.
+    // Conversion tracking is not enabled in the campaign that has value-based
+    // bidding transitions.
     CONVERSION_TRACKING_NOT_ENABLED = 19;
 
-    // Not enough conversions tracked for YouTube Video Builder transitions.
+    // Not enough conversions tracked for value-based bidding transitions.
     NOT_ENOUGH_CONVERSIONS = 20;
 
     // Campaign can not be created with given bidding strategy. It can be
diff --git a/google/ads/googleads/v4/errors/offline_user_data_job_error.proto b/google/ads/googleads/v4/errors/offline_user_data_job_error.proto
index dd081a4b9..8e4839643 100644
--- a/google/ads/googleads/v4/errors/offline_user_data_job_error.proto
+++ b/google/ads/googleads/v4/errors/offline_user_data_job_error.proto
@@ -109,7 +109,7 @@ message OfflineUserDataJobErrorEnum {
     // Remove operation is not allowed for store sales direct updates.
     REMOVE_NOT_SUPPORTED = 23;
 
-    // Remove-all is not supported for store sales direct updates.
+    // Remove-all is not supported for certain offline user data job types.
     REMOVE_ALL_NOT_SUPPORTED = 24;
 
     // The SHA256 encoded value is malformed.
@@ -125,7 +125,7 @@ message OfflineUserDataJobErrorEnum {
     // The custom key specified is not set in the upload.
     CUSTOM_KEY_NOT_SET = 29;
 
-    // The customer has not accpeted the customer data terms in the conversion
+    // The customer has not accepted the customer data terms in the conversion
     // settings page.
     CUSTOMER_NOT_ACCEPTED_CUSTOMER_DATA_TERMS = 30;
   }
diff --git a/google/ads/googleads/v4/resources/ad_group_ad_asset_view.proto b/google/ads/googleads/v4/resources/ad_group_ad_asset_view.proto
index fdb112670..97225e586 100644
--- a/google/ads/googleads/v4/resources/ad_group_ad_asset_view.proto
+++ b/google/ads/googleads/v4/resources/ad_group_ad_asset_view.proto
@@ -38,6 +38,7 @@ option ruby_package = "Google::Ads::GoogleAds::V4::Resources";
 // Proto file describing the ad group ad asset view resource.
 
 // A link between an AdGroupAd and an Asset.
+// Currently we only support AdGroupAdAssetView for AppAds.
 message AdGroupAdAssetView {
   option (google.api.resource) = {
     type: "googleads.googleapis.com/AdGroupAdAssetView"
diff --git a/google/ads/googleads/v4/resources/ad_group_criterion_simulation.proto b/google/ads/googleads/v4/resources/ad_group_criterion_simulation.proto
index 6100babc9..5dc0b5c0e 100644
--- a/google/ads/googleads/v4/resources/ad_group_criterion_simulation.proto
+++ b/google/ads/googleads/v4/resources/ad_group_criterion_simulation.proto
@@ -37,11 +37,14 @@ option ruby_package = "Google::Ads::GoogleAds::V4::Resources";
 
 // An ad group criterion simulation. Supported combinations of advertising
 // channel type, criterion type, simulation type, and simulation modification
-// method are detailed below respectively.
+// method are detailed below respectively. Hotel AdGroupCriterion simulation
+// operations starting in V5.
 //
 // 1. DISPLAY - KEYWORD - CPC_BID - UNIFORM
 // 2. SEARCH - KEYWORD - CPC_BID - UNIFORM
 // 3. SHOPPING - LISTING_GROUP - CPC_BID - UNIFORM
+// 4. HOTEL - LISTING_GROUP - CPC_BID - UNIFORM
+// 5. HOTEL - LISTING_GROUP - PERCENT_CPC_BID - UNIFORM
 message AdGroupCriterionSimulation {
   option (google.api.resource) = {
     type: "googleads.googleapis.com/AdGroupCriterionSimulation"
diff --git a/google/ads/googleads/v4/resources/campaign.proto b/google/ads/googleads/v4/resources/campaign.proto
index d24d4cfff..6d14c3ee0 100644
--- a/google/ads/googleads/v4/resources/campaign.proto
+++ b/google/ads/googleads/v4/resources/campaign.proto
@@ -106,35 +106,6 @@ message Campaign {
     ];
   }
 
-  // Represents a collection of settings related to ads geotargeting.
-  message GeoTargetTypeSetting {
-    // The setting used for positive geotargeting in this particular campaign.
-    google.ads.googleads.v4.enums.PositiveGeoTargetTypeEnum.PositiveGeoTargetType positive_geo_target_type = 1;
-
-    // The setting used for negative geotargeting in this particular campaign.
-    google.ads.googleads.v4.enums.NegativeGeoTargetTypeEnum.NegativeGeoTargetType negative_geo_target_type = 2;
-  }
-
-  // Campaign-level settings for App Campaigns.
-  message AppCampaignSetting {
-    // Represents the goal which the bidding strategy of this app campaign
-    // should optimize towards.
-    google.ads.googleads.v4.enums.AppCampaignBiddingStrategyGoalTypeEnum.AppCampaignBiddingStrategyGoalType bidding_strategy_goal_type = 1;
-
-    // Immutable. A string that uniquely identifies a mobile application.
-    google.protobuf.StringValue app_id = 2 [(google.api.field_behavior) = IMMUTABLE];
-
-    // Immutable. The application store that distributes this specific app.
-    google.ads.googleads.v4.enums.AppCampaignAppStoreEnum.AppCampaignAppStore app_store = 3 [(google.api.field_behavior) = IMMUTABLE];
-  }
-
-  // Optimization goal setting for this campaign, which includes a set of
-  // optimization goal types.
-  message OptimizationGoalSetting {
-    // The list of optimization goal types.
-    repeated google.ads.googleads.v4.enums.OptimizationGoalTypeEnum.OptimizationGoalType optimization_goal_types = 1;
-  }
-
   // The setting for Shopping campaigns. Defines the universe of products that
   // can be advertised by the campaign, and how this campaign interacts with
   // other Shopping campaigns.
@@ -162,18 +133,49 @@ message Campaign {
     google.protobuf.BoolValue enable_local = 4;
   }
 
+  // Selective optimization setting for this campaign, which includes a set of
+  // conversion actions to optimize this campaign towards.
+  message SelectiveOptimization {
+    // The selected set of conversion actions for optimizing this campaign.
+    repeated google.protobuf.StringValue conversion_actions = 1 [(google.api.resource_reference) = {
+                                                                   type: "googleads.googleapis.com/ConversionAction"
+                                                                 }];
+  }
+
   // Campaign-level settings for tracking information.
   message TrackingSetting {
     // Output only. The url used for dynamic tracking.
     google.protobuf.StringValue tracking_url = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
   }
 
+  // Represents a collection of settings related to ads geotargeting.
+  message GeoTargetTypeSetting {
+    // The setting used for positive geotargeting in this particular campaign.
+    google.ads.googleads.v4.enums.PositiveGeoTargetTypeEnum.PositiveGeoTargetType positive_geo_target_type = 1;
+
+    // The setting used for negative geotargeting in this particular campaign.
+    google.ads.googleads.v4.enums.NegativeGeoTargetTypeEnum.NegativeGeoTargetType negative_geo_target_type = 2;
+  }
+
   // Campaign setting for local campaigns.
   message LocalCampaignSetting {
     // The location source type for this local campaign.
     google.ads.googleads.v4.enums.LocationSourceTypeEnum.LocationSourceType location_source_type = 1;
   }
 
+  // Campaign-level settings for App Campaigns.
+  message AppCampaignSetting {
+    // Represents the goal which the bidding strategy of this app campaign
+    // should optimize towards.
+    google.ads.googleads.v4.enums.AppCampaignBiddingStrategyGoalTypeEnum.AppCampaignBiddingStrategyGoalType bidding_strategy_goal_type = 1;
+
+    // Immutable. A string that uniquely identifies a mobile application.
+    google.protobuf.StringValue app_id = 2 [(google.api.field_behavior) = IMMUTABLE];
+
+    // Immutable. The application store that distributes this specific app.
+    google.ads.googleads.v4.enums.AppCampaignAppStoreEnum.AppCampaignAppStore app_store = 3 [(google.api.field_behavior) = IMMUTABLE];
+  }
+
   // Describes how unbranded pharma ads will be displayed.
   message VanityPharma {
     // The display mode for vanity pharma URLs.
@@ -184,13 +186,11 @@ message Campaign {
     google.ads.googleads.v4.enums.VanityPharmaTextEnum.VanityPharmaText vanity_pharma_text = 2;
   }
 
-  // Selective optimization setting for this campaign, which includes a set of
-  // conversion actions to optimize this campaign towards.
-  message SelectiveOptimization {
-    // The selected set of conversion actions for optimizing this campaign.
-    repeated google.protobuf.StringValue conversion_actions = 1 [(google.api.resource_reference) = {
-                                                                   type: "googleads.googleapis.com/ConversionAction"
-                                                                 }];
+  // Optimization goal setting for this campaign, which includes a set of
+  // optimization goal types.
+  message OptimizationGoalSetting {
+    // The list of optimization goal types.
+    repeated google.ads.googleads.v4.enums.OptimizationGoalTypeEnum.OptimizationGoalType optimization_goal_types = 1;
   }
 
   // Immutable. The resource name of the campaign.
@@ -354,7 +354,8 @@ message Campaign {
   //
   // Optimization score is an estimate of how well a campaign is set to perform.
   // It ranges from 0% (0.0) to 100% (1.0), with 100% indicating that the
-  // campaign is performing at full potential.
+  // campaign is performing at full potential. This field is null for unscored
+  // campaigns.
   //
   // See "About optimization score" at
   // https://support.google.com/google-ads/answer/9061546.
@@ -389,7 +390,7 @@ message Campaign {
     google.ads.googleads.v4.common.ManualCpv manual_cpv = 37 [(google.api.field_behavior) = OUTPUT_ONLY];
 
     // Standard Maximize Conversions bidding strategy that automatically
-    // maximizes number of conversions given a daily budget.
+    // maximizes number of conversions while spending your budget.
     google.ads.googleads.v4.common.MaximizeConversions maximize_conversions = 30;
 
     // Standard Maximize Conversion Value bidding strategy that automatically
diff --git a/google/ads/googleads/v4/resources/campaign_budget.proto b/google/ads/googleads/v4/resources/campaign_budget.proto
index add7c88c0..ceb454c0d 100644
--- a/google/ads/googleads/v4/resources/campaign_budget.proto
+++ b/google/ads/googleads/v4/resources/campaign_budget.proto
@@ -46,7 +46,7 @@ message CampaignBudget {
   // Immutable. The resource name of the campaign budget.
   // Campaign budget resource names have the form:
   //
-  // `customers/{customer_id}/campaignBudgets/{budget_id}`
+  // `customers/{customer_id}/campaignBudgets/{campaign_budget_id}`
   string resource_name = 1 [
     (google.api.field_behavior) = IMMUTABLE,
     (google.api.resource_reference) = {
diff --git a/google/ads/googleads/v4/resources/currency_constant.proto b/google/ads/googleads/v4/resources/currency_constant.proto
index 6bbea6dd3..e80e4022c 100644
--- a/google/ads/googleads/v4/resources/currency_constant.proto
+++ b/google/ads/googleads/v4/resources/currency_constant.proto
@@ -42,7 +42,7 @@ message CurrencyConstant {
   // Output only. The resource name of the currency constant.
   // Currency constant resource names have the form:
   //
-  // `currencyConstants/{currency_code}`
+  // `currencyConstants/{code}`
   string resource_name = 1 [
     (google.api.field_behavior) = OUTPUT_ONLY,
     (google.api.resource_reference) = {
diff --git a/google/ads/googleads/v4/resources/customer.proto b/google/ads/googleads/v4/resources/customer.proto
index 2de4d5ab3..1bc65e986 100644
--- a/google/ads/googleads/v4/resources/customer.proto
+++ b/google/ads/googleads/v4/resources/customer.proto
@@ -101,7 +101,8 @@ message Customer {
   // Output only. Optimization score of the customer.
   //
   // Optimization score is an estimate of how well a customer's campaigns are
-  // set to perform. It ranges from 0% (0.0) to 100% (1.0).
+  // set to perform. It ranges from 0% (0.0) to 100% (1.0). This field is null
+  // for all manager customers, and for unscored non-manager customers.
   //
   // See "About optimization score" at
   // https://support.google.com/google-ads/answer/9061546.
diff --git a/google/ads/googleads/v4/resources/dynamic_search_ads_search_term_view.proto b/google/ads/googleads/v4/resources/dynamic_search_ads_search_term_view.proto
index 492070c93..11da4b5d0 100644
--- a/google/ads/googleads/v4/resources/dynamic_search_ads_search_term_view.proto
+++ b/google/ads/googleads/v4/resources/dynamic_search_ads_search_term_view.proto
@@ -42,7 +42,7 @@ message DynamicSearchAdsSearchTermView {
   // Output only. The resource name of the dynamic search ads search term view.
   // Dynamic search ads search term view resource names have the form:
   //
-  // `customers/{customer_id}/dynamicSearchAdsSearchTermViews/{ad_group_id}~{search_term_fp}~{headline_fp}~{landing_page_fp}~{page_url_fp}`
+  // `customers/{customer_id}/dynamicSearchAdsSearchTermViews/{ad_group_id}~{search_term_fingerprint}~{headline_fingerprint}~{landing_page_fingerprint}~{page_url_fingerprint}`
   string resource_name = 1 [
     (google.api.field_behavior) = OUTPUT_ONLY,
     (google.api.resource_reference) = {
diff --git a/google/ads/googleads/v4/resources/invoice.proto b/google/ads/googleads/v4/resources/invoice.proto
index 33fef4e59..79d1e43b9 100644
--- a/google/ads/googleads/v4/resources/invoice.proto
+++ b/google/ads/googleads/v4/resources/invoice.proto
@@ -142,8 +142,12 @@ message Invoice {
   // on the invoice, not on a specific account budget.
   google.protobuf.Int64Value invoice_level_adjustments_micros = 11 [(google.api.field_behavior) = OUTPUT_ONLY];
 
-  // Output only. The pretax subtotal amount, in micros. This equals the sum of the
-  // AccountBudgetSummary subtotal amounts, plus the invoice level adjustments.
+  // Output only. The pretax subtotal amount, in micros. This equals the
+  // sum of the AccountBudgetSummary subtotal amounts,
+  // Invoice.adjustments_subtotal_amount_micros, and
+  // Invoice.regulatory_costs_subtotal_amount_micros.
+  // Starting with v6, the Invoice.regulatory_costs_subtotal_amount_micros is no
+  // longer included.
   google.protobuf.Int64Value subtotal_amount_micros = 12 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // Output only. The sum of all taxes on the invoice, in micros. This equals the sum of the
@@ -151,8 +155,11 @@ message Invoice {
   // account budget.
   google.protobuf.Int64Value tax_amount_micros = 13 [(google.api.field_behavior) = OUTPUT_ONLY];
 
-  // Output only. The total amount, in micros. This equals the sum of the invoice subtotal
-  // amount and the invoice tax amount.
+  // Output only. The total amount, in micros. This equals the sum of
+  // Invoice.subtotal_amount_micros and Invoice.tax_amount_micros.
+  // Starting with v6, Invoice.regulatory_costs_subtotal_amount_micros is
+  // also added as it is no longer already included in
+  // Invoice.tax_amount_micros.
   google.protobuf.Int64Value total_amount_micros = 14 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // Output only. The resource name of the original invoice corrected, wrote off, or canceled
diff --git a/google/ads/googleads/v4/resources/recommendation.proto b/google/ads/googleads/v4/resources/recommendation.proto
index 195c22fd0..8dd115333 100644
--- a/google/ads/googleads/v4/resources/recommendation.proto
+++ b/google/ads/googleads/v4/resources/recommendation.proto
@@ -106,10 +106,10 @@ message Recommendation {
     google.protobuf.Int64Value recommended_cpc_bid_micros = 2 [(google.api.field_behavior) = OUTPUT_ONLY];
   }
 
-  // The Call extension recommendation.
-  message CallExtensionRecommendation {
-    // Output only. Call extensions recommended to be added.
-    repeated google.ads.googleads.v4.common.CallFeedItem recommended_extensions = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
+  // The Callout extension recommendation.
+  message CalloutExtensionRecommendation {
+    // Output only. Callout extensions recommended to be added.
+    repeated google.ads.googleads.v4.common.CalloutFeedItem recommended_extensions = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
   }
 
   // The text ad recommendation.
@@ -127,15 +127,6 @@ message Recommendation {
     google.protobuf.StringValue auto_apply_date = 3 [(google.api.field_behavior) = OUTPUT_ONLY];
   }
 
-  // The keyword match type recommendation.
-  message KeywordMatchTypeRecommendation {
-    // Output only. The existing keyword where the match type should be more broad.
-    google.ads.googleads.v4.common.KeywordInfo keyword = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
-
-    // Output only. The recommended new match type.
-    google.ads.googleads.v4.enums.KeywordMatchTypeEnum.KeywordMatchType recommended_match_type = 2 [(google.api.field_behavior) = OUTPUT_ONLY];
-  }
-
   // The Target CPA opt-in recommendation.
   message TargetCpaOptInRecommendation {
     // The Target CPA opt-in option with impact estimate.
@@ -164,25 +155,39 @@ message Recommendation {
     google.protobuf.Int64Value recommended_target_cpa_micros = 2 [(google.api.field_behavior) = OUTPUT_ONLY];
   }
 
+  // The Optimize Ad Rotation recommendation.
+  message OptimizeAdRotationRecommendation {
+
+  }
+
+  // The move unused budget recommendation.
+  message MoveUnusedBudgetRecommendation {
+    // Output only. The excess budget's resource_name.
+    google.protobuf.StringValue excess_campaign_budget = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
+
+    // Output only. The recommendation for the constrained budget to increase.
+    CampaignBudgetRecommendation budget_recommendation = 2 [(google.api.field_behavior) = OUTPUT_ONLY];
+  }
+
   // The Maximize Conversions Opt-In recommendation.
   message MaximizeConversionsOptInRecommendation {
     // Output only. The recommended new budget amount.
     google.protobuf.Int64Value recommended_budget_amount_micros = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
   }
 
-  // The Sitelink extension recommendation.
-  message SitelinkExtensionRecommendation {
-    // Output only. Sitelink extensions recommended to be added.
-    repeated google.ads.googleads.v4.common.SitelinkFeedItem recommended_extensions = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
-  }
+  // The Search Partners Opt-In recommendation.
+  message SearchPartnersOptInRecommendation {
 
-  // The Enhanced Cost-Per-Click Opt-In recommendation.
-  message EnhancedCpcOptInRecommendation {
+  }
 
+  // The Call extension recommendation.
+  message CallExtensionRecommendation {
+    // Output only. Call extensions recommended to be added.
+    repeated google.ads.googleads.v4.common.CallFeedItem recommended_extensions = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
   }
 
-  // The Search Partners Opt-In recommendation.
-  message SearchPartnersOptInRecommendation {
+  // The Enhanced Cost-Per-Click Opt-In recommendation.
+  message EnhancedCpcOptInRecommendation {
 
   }
 
@@ -193,24 +198,19 @@ message Recommendation {
     google.protobuf.Int64Value recommended_budget_amount_micros = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
   }
 
-  // The Optimize Ad Rotation recommendation.
-  message OptimizeAdRotationRecommendation {
-
-  }
-
-  // The Callout extension recommendation.
-  message CalloutExtensionRecommendation {
-    // Output only. Callout extensions recommended to be added.
-    repeated google.ads.googleads.v4.common.CalloutFeedItem recommended_extensions = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
+  // The Sitelink extension recommendation.
+  message SitelinkExtensionRecommendation {
+    // Output only. Sitelink extensions recommended to be added.
+    repeated google.ads.googleads.v4.common.SitelinkFeedItem recommended_extensions = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
   }
 
-  // The move unused budget recommendation.
-  message MoveUnusedBudgetRecommendation {
-    // Output only. The excess budget's resource_name.
-    google.protobuf.StringValue excess_campaign_budget = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
+  // The keyword match type recommendation.
+  message KeywordMatchTypeRecommendation {
+    // Output only. The existing keyword where the match type should be more broad.
+    google.ads.googleads.v4.common.KeywordInfo keyword = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
 
-    // Output only. The recommendation for the constrained budget to increase.
-    CampaignBudgetRecommendation budget_recommendation = 2 [(google.api.field_behavior) = OUTPUT_ONLY];
+    // Output only. The recommended new match type.
+    google.ads.googleads.v4.enums.KeywordMatchTypeEnum.KeywordMatchType recommended_match_type = 2 [(google.api.field_behavior) = OUTPUT_ONLY];
   }
 
   // Immutable. The resource name of the recommendation.
diff --git a/google/ads/googleads/v4/services/keyword_plan_ad_group_keyword_service.proto b/google/ads/googleads/v4/services/keyword_plan_ad_group_keyword_service.proto
index a28fc337e..285f8cce1 100644
--- a/google/ads/googleads/v4/services/keyword_plan_ad_group_keyword_service.proto
+++ b/google/ads/googleads/v4/services/keyword_plan_ad_group_keyword_service.proto
@@ -117,7 +117,9 @@ message KeywordPlanAdGroupKeywordOperation {
     // keyword is expected, in this format:
     //
     // `customers/{customer_id}/keywordPlanAdGroupKeywords/{kp_ad_group_keyword_id}`
-    string remove = 3;
+    string remove = 3 [(google.api.resource_reference) = {
+                         type: "googleads.googleapis.com/KeywordPlanAdGroupKeyword"
+                       }];
   }
 }
 
diff --git a/google/ads/googleads/v4/services/keyword_plan_ad_group_service.proto b/google/ads/googleads/v4/services/keyword_plan_ad_group_service.proto
index 71a62b008..8179d8a89 100644
--- a/google/ads/googleads/v4/services/keyword_plan_ad_group_service.proto
+++ b/google/ads/googleads/v4/services/keyword_plan_ad_group_service.proto
@@ -108,7 +108,9 @@ message KeywordPlanAdGroupOperation {
     // is expected, in this format:
     //
     // `customers/{customer_id}/keywordPlanAdGroups/{kp_ad_group_id}`
-    string remove = 3;
+    string remove = 3 [(google.api.resource_reference) = {
+                         type: "googleads.googleapis.com/KeywordPlanAdGroup"
+                       }];
   }
 }
 
diff --git a/google/ads/googleads/v4/services/keyword_plan_campaign_keyword_service.proto b/google/ads/googleads/v4/services/keyword_plan_campaign_keyword_service.proto
index ff57ee34c..ed7ef08a7 100644
--- a/google/ads/googleads/v4/services/keyword_plan_campaign_keyword_service.proto
+++ b/google/ads/googleads/v4/services/keyword_plan_campaign_keyword_service.proto
@@ -115,7 +115,9 @@ message KeywordPlanCampaignKeywordOperation {
     // keywords expected in this format:
     //
     // `customers/{customer_id}/keywordPlanCampaignKeywords/{kp_campaign_keyword_id}`
-    string remove = 3;
+    string remove = 3 [(google.api.resource_reference) = {
+                         type: "googleads.googleapis.com/KeywordPlanCampaignKeyword"
+                       }];
   }
 }
 
diff --git a/google/ads/googleads/v4/services/keyword_plan_campaign_service.proto b/google/ads/googleads/v4/services/keyword_plan_campaign_service.proto
index 5841a7ef7..d7262d2b9 100644
--- a/google/ads/googleads/v4/services/keyword_plan_campaign_service.proto
+++ b/google/ads/googleads/v4/services/keyword_plan_campaign_service.proto
@@ -109,7 +109,9 @@ message KeywordPlanCampaignOperation {
     // is expected, in this format:
     //
     // `customers/{customer_id}/keywordPlanCampaigns/{keywordPlan_campaign_id}`
-    string remove = 3;
+    string remove = 3 [(google.api.resource_reference) = {
+                         type: "googleads.googleapis.com/KeywordPlanCampaign"
+                       }];
   }
 }
 
diff --git a/google/ads/googleads/v4/services/keyword_plan_service.proto b/google/ads/googleads/v4/services/keyword_plan_service.proto
index 499dbac4f..606d9943b 100644
--- a/google/ads/googleads/v4/services/keyword_plan_service.proto
+++ b/google/ads/googleads/v4/services/keyword_plan_service.proto
@@ -141,7 +141,9 @@ message KeywordPlanOperation {
     // expected in this format:
     //
     // `customers/{customer_id}/keywordPlans/{keyword_plan_id}`
-    string remove = 3;
+    string remove = 3 [(google.api.resource_reference) = {
+                         type: "googleads.googleapis.com/KeywordPlan"
+                       }];
   }
 }
 
@@ -166,7 +168,12 @@ message MutateKeywordPlansResult {
 // Request message for [KeywordPlanService.GenerateForecastCurve][google.ads.googleads.v4.services.KeywordPlanService.GenerateForecastCurve].
 message GenerateForecastCurveRequest {
   // Required. The resource name of the keyword plan to be forecasted.
-  string keyword_plan = 1 [(google.api.field_behavior) = REQUIRED];
+  string keyword_plan = 1 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = {
+      type: "googleads.googleapis.com/KeywordPlan"
+    }
+  ];
 }
 
 // Response message for [KeywordPlanService.GenerateForecastCurve][google.ads.googleads.v4.services.KeywordPlanService.GenerateForecastCurve].
@@ -179,7 +186,12 @@ message GenerateForecastCurveResponse {
 // Request message for [KeywordPlanService.GenerateForecastMetrics][google.ads.googleads.v4.services.KeywordPlanService.GenerateForecastMetrics].
 message GenerateForecastMetricsRequest {
   // Required. The resource name of the keyword plan to be forecasted.
-  string keyword_plan = 1 [(google.api.field_behavior) = REQUIRED];
+  string keyword_plan = 1 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = {
+      type: "googleads.googleapis.com/KeywordPlan"
+    }
+  ];
 }
 
 // Response message for [KeywordPlanService.GenerateForecastMetrics][google.ads.googleads.v4.services.KeywordPlanService.GenerateForecastMetrics].
@@ -276,7 +288,12 @@ message ForecastMetrics {
 message GenerateHistoricalMetricsRequest {
   // Required. The resource name of the keyword plan of which historical metrics are
   // requested.
-  string keyword_plan = 1 [(google.api.field_behavior) = REQUIRED];
+  string keyword_plan = 1 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = {
+      type: "googleads.googleapis.com/KeywordPlan"
+    }
+  ];
 }
 
 // Response message for [KeywordPlanService.GenerateHistoricalMetrics][google.ads.googleads.v4.services.KeywordPlanService.GenerateHistoricalMetrics].
diff --git a/google/ads/googleads/v4/services/reach_plan_service.proto b/google/ads/googleads/v4/services/reach_plan_service.proto
index 99e302b32..d52b8d8d6 100644
--- a/google/ads/googleads/v4/services/reach_plan_service.proto
+++ b/google/ads/googleads/v4/services/reach_plan_service.proto
@@ -130,7 +130,7 @@ message ListPlannableProductsResponse {
 
 // The metadata associated with an available plannable product.
 message ProductMetadata {
-  // The code associated with the ad product. E.g. Trueview, Bumper
+  // The code associated with the ad product. E.g. BUMPER, TRUEVIEW_IN_STREAM
   // To list the available plannable product codes use ListPlannableProducts.
   google.protobuf.StringValue plannable_product_code = 1;
 
@@ -317,7 +317,8 @@ message CampaignDuration {
 // A product being planned for reach.
 message PlannedProduct {
   // Required. Selected product for planning.
-  // Plannable products codes can be obtained from ListPlannableProducts.
+  // The code associated with the ad product. E.g. Trueview, Bumper
+  // To list the available plannable product codes use ListPlannableProducts.
   google.protobuf.StringValue plannable_product_code = 1;
 
   // Required. Maximum budget allocation in micros for the selected product.