diff --git a/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/address.proto b/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/address.proto
index 9e7e192b99c..c24a3bf9618 100644
--- a/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/address.proto
+++ b/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/address.proto
@@ -1,4 +1,4 @@
-// Copyright 2022 Google LLC
+// Copyright 2023 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -29,22 +29,25 @@ option objc_class_prefix = "GMPAVV1";
 option php_namespace = "Google\\Maps\\AddressValidation\\V1";
 option ruby_package = "Google::Maps::AddressValidation::V1";
 
-// Details of the address parsed from the input.
+// Details of the post-processed address. Post-processing includes
+// correcting misspelled parts of the address, replacing incorrect parts, and
+// inferring missing parts.
 message Address {
-  // The corrected address, formatted as a single-line address following the
-  // address formatting rules of the region where the address is located.
+  // The post-processed address, formatted as a single-line address following
+  // the address formatting rules of the region where the address is located.
   string formatted_address = 2;
 
-  // The validated address represented as a postal address.
+  // The post-processed address represented as a postal address.
   google.type.PostalAddress postal_address = 3;
 
-  // Unordered list. The individual address components of the formatted and corrected address,
-  // along with validation information. This provides information on the
-  // validation status of the individual components.
+  // Unordered list. The individual address components of the formatted and
+  // corrected address, along with validation information. This provides
+  // information on the validation status of the individual components.
   //
   // Address components are not ordered in a particular way. Do not make any
   // assumptions on the ordering of the address components in the list.
-  repeated AddressComponent address_components = 4 [(google.api.field_behavior) = UNORDERED_LIST];
+  repeated AddressComponent address_components = 4
+      [(google.api.field_behavior) = UNORDERED_LIST];
 
   // The types of components that were expected to be present in a correctly
   // formatted mailing address but were not found in the input AND could
diff --git a/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/address_validation_service.proto b/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/address_validation_service.proto
index 95c8c760f2c..ff19440eede 100644
--- a/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/address_validation_service.proto
+++ b/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/address_validation_service.proto
@@ -1,4 +1,4 @@
-// Copyright 2022 Google LLC
+// Copyright 2023 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -175,7 +175,8 @@ message ValidationResult {
   // Information about the location and place that the address geocoded to.
   Geocode geocode = 3;
 
-  // Other information relevant to deliverability.
+  // Other information relevant to deliverability. `metadata` is not guaranteed
+  // to be fully populated for every address sent to the Address Validation API.
   AddressMetadata metadata = 4;
 
   // Extra deliverability flags provided by USPS. Only provided in region `US`
diff --git a/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/geocode.proto b/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/geocode.proto
index ffb71b8aa6b..2caa88a4cd5 100644
--- a/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/geocode.proto
+++ b/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/geocode.proto
@@ -1,4 +1,4 @@
-// Copyright 2022 Google LLC
+// Copyright 2023 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/metadata.proto b/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/metadata.proto
index 914f0c34228..b65b4984127 100644
--- a/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/metadata.proto
+++ b/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/metadata.proto
@@ -1,4 +1,4 @@
-// Copyright 2022 Google LLC
+// Copyright 2023 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -26,7 +26,8 @@ option objc_class_prefix = "GMPAVV1";
 option php_namespace = "Google\\Maps\\AddressValidation\\V1";
 option ruby_package = "Google::Maps::AddressValidation::V1";
 
-// The metadata for the address.
+// The metadata for the address. `metadata` is not guaranteed to be fully
+// populated for every address sent to the Address Validation API.
 message AddressMetadata {
   // Indicates that this is the address of a business.
   // If unset, indicates that the value is unknown.
diff --git a/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/usps_data.proto b/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/usps_data.proto
index 10334d51fcf..c1680a12779 100644
--- a/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/usps_data.proto
+++ b/packages/google-maps-addressvalidation/protos/google/maps/addressvalidation/v1/usps_data.proto
@@ -1,4 +1,4 @@
-// Copyright 2022 Google LLC
+// Copyright 2023 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -56,7 +56,10 @@ message UspsAddress {
   string zip_code_extension = 9;
 }
 
-// The USPS data for the address.
+// The USPS data for the address. `uspsData` is not guaranteed to be fully
+// populated for every US or PR address sent to the Address Validation API. It's
+// recommended to integrate the backup address fields in the response if you
+// utilize uspsData as the primary part of the response.
 message UspsData {
   // USPS standardized address.
   UspsAddress standardized_address = 1;
diff --git a/packages/google-maps-addressvalidation/samples/generated/v1/snippet_metadata.google.maps.addressvalidation.v1.json b/packages/google-maps-addressvalidation/samples/generated/v1/snippet_metadata.google.maps.addressvalidation.v1.json
index e632a307e3d..e9697ce4e35 100644
--- a/packages/google-maps-addressvalidation/samples/generated/v1/snippet_metadata.google.maps.addressvalidation.v1.json
+++ b/packages/google-maps-addressvalidation/samples/generated/v1/snippet_metadata.google.maps.addressvalidation.v1.json
@@ -1,7 +1,7 @@
 {
     "clientLibrary": {
         "name": "nodejs-addressvalidation",
-        "version": "1.0.1",
+        "version": "1.0.2",
         "language": "TYPESCRIPT",
         "apis": [
             {
diff --git a/packages/google-maps-addressvalidation/webpack.config.js b/packages/google-maps-addressvalidation/webpack.config.js
index b1fb80b0e30..7eccfa8e0fd 100644
--- a/packages/google-maps-addressvalidation/webpack.config.js
+++ b/packages/google-maps-addressvalidation/webpack.config.js
@@ -1,4 +1,4 @@
-// Copyright 2023 Google LLC
+// Copyright 2021 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.