diff --git a/google/cloud/retail/v2/import_config.proto b/google/cloud/retail/v2/import_config.proto
index fd5e31df..cece6d5d 100644
--- a/google/cloud/retail/v2/import_config.proto
+++ b/google/cloud/retail/v2/import_config.proto
@@ -18,7 +18,6 @@ package google.cloud.retail.v2;
 
 import "google/api/annotations.proto";
 import "google/api/field_behavior.proto";
-import "google/api/resource.proto";
 import "google/cloud/retail/v2/product.proto";
 import "google/cloud/retail/v2/user_event.proto";
 import "google/protobuf/field_mask.proto";
diff --git a/google/cloud/retail/v2/product.proto b/google/cloud/retail/v2/product.proto
index 9deff40c..39e0f8ea 100644
--- a/google/cloud/retail/v2/product.proto
+++ b/google/cloud/retail/v2/product.proto
@@ -111,12 +111,9 @@ message Product {
   string primary_product_id = 4;
 
   // Product categories. This field is repeated for supporting one product
-  // belonging to several parallel categories. Each value is either the full
-  // path of the category, or the [category ID][taxonomy_with_ids]. Strongly
-  // recommended using the full path for better search / recommendation quality.
+  // belonging to several parallel categories. Strongly recommended using the
+  // full path for better search / recommendation quality.
   //
-  // [taxonomy_with_ids]:
-  // https://www.google.com/basepages/producttype/taxonomy-with-ids.en-US.txt
   //
   // To represent full path of category, use '>' sign to separate different
   // hierarchies. If '>' is part of the category name, please replace it with
@@ -141,7 +138,7 @@ message Product {
   // characters. Otherwise, an INVALID_ARGUMENT error is returned.
   //
   // Google Merchant Center property
-  // [google_product_category][mc_google_product_category. Schema.org property
+  // [google_product_category][mc_google_product_category]. Schema.org property
   // [Product.category] (https://schema.org/category).
   //
   // [mc_google_product_category]:
diff --git a/google/cloud/retail/v2alpha/import_config.proto b/google/cloud/retail/v2alpha/import_config.proto
index 0b8be8b5..dc3ffe92 100644
--- a/google/cloud/retail/v2alpha/import_config.proto
+++ b/google/cloud/retail/v2alpha/import_config.proto
@@ -18,7 +18,6 @@ package google.cloud.retail.v2alpha;
 
 import "google/api/annotations.proto";
 import "google/api/field_behavior.proto";
-import "google/api/resource.proto";
 import "google/cloud/retail/v2alpha/product.proto";
 import "google/cloud/retail/v2alpha/user_event.proto";
 import "google/protobuf/field_mask.proto";
diff --git a/google/cloud/retail/v2alpha/product.proto b/google/cloud/retail/v2alpha/product.proto
index 71c92129..e92a85d9 100644
--- a/google/cloud/retail/v2alpha/product.proto
+++ b/google/cloud/retail/v2alpha/product.proto
@@ -111,12 +111,9 @@ message Product {
   string primary_product_id = 4;
 
   // Product categories. This field is repeated for supporting one product
-  // belonging to several parallel categories. Each value is either the full
-  // path of the category, or the [category ID][taxonomy_with_ids]. Strongly
-  // recommended using the full path for better search / recommendation quality.
+  // belonging to several parallel categories. Strongly recommended using the
+  // full path for better search / recommendation quality.
   //
-  // [taxonomy_with_ids]:
-  // https://www.google.com/basepages/producttype/taxonomy-with-ids.en-US.txt
   //
   // To represent full path of category, use '>' sign to separate different
   // hierarchies. If '>' is part of the category name, please replace it with
@@ -141,7 +138,7 @@ message Product {
   // 5,000 characters. Otherwise, an INVALID_ARGUMENT error is returned.
   //
   // Google Merchant Center property
-  // [google_product_category][mc_google_product_category. Schema.org property
+  // [google_product_category][mc_google_product_category]. Schema.org property
   // [Product.category] (https://schema.org/category).
   //
   // [mc_google_product_category]:
diff --git a/google/cloud/retail/v2beta/import_config.proto b/google/cloud/retail/v2beta/import_config.proto
index 5de09262..4ea8f651 100644
--- a/google/cloud/retail/v2beta/import_config.proto
+++ b/google/cloud/retail/v2beta/import_config.proto
@@ -18,7 +18,6 @@ package google.cloud.retail.v2beta;
 
 import "google/api/annotations.proto";
 import "google/api/field_behavior.proto";
-import "google/api/resource.proto";
 import "google/cloud/retail/v2beta/product.proto";
 import "google/cloud/retail/v2beta/user_event.proto";
 import "google/protobuf/field_mask.proto";
diff --git a/google/cloud/retail/v2beta/product.proto b/google/cloud/retail/v2beta/product.proto
index 7c8ec9fa..f5c7c7dd 100644
--- a/google/cloud/retail/v2beta/product.proto
+++ b/google/cloud/retail/v2beta/product.proto
@@ -111,12 +111,9 @@ message Product {
   string primary_product_id = 4;
 
   // Product categories. This field is repeated for supporting one product
-  // belonging to several parallel categories. Each value is either the full
-  // path of the category, or the [category ID][taxonomy_with_ids]. Strongly
-  // recommended using the full path for better search / recommendation quality.
+  // belonging to several parallel categories. Strongly recommended using the
+  // full path for better search / recommendation quality.
   //
-  // [taxonomy_with_ids]:
-  // https://www.google.com/basepages/producttype/taxonomy-with-ids.en-US.txt
   //
   // To represent full path of category, use '>' sign to separate different
   // hierarchies. If '>' is part of the category name, please replace it with
@@ -141,7 +138,7 @@ message Product {
   // 5,000 characters. Otherwise, an INVALID_ARGUMENT error is returned.
   //
   // Google Merchant Center property
-  // [google_product_category][mc_google_product_category. Schema.org property
+  // [google_product_category][mc_google_product_category]. Schema.org property
   // [Product.category] (https://schema.org/category).
   //
   // [mc_google_product_category]: