diff --git a/googleapis/cloud/retail/v2/product.pb.go b/googleapis/cloud/retail/v2/product.pb.go
index 0a441d6dd..12cb80b27 100644
--- a/googleapis/cloud/retail/v2/product.pb.go
+++ b/googleapis/cloud/retail/v2/product.pb.go
@@ -28,7 +28,7 @@ import (
 	_ "google.golang.org/genproto/googleapis/api/annotations"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	fieldmaskpb "google.golang.org/protobuf/types/known/fieldmaskpb"
+	_ "google.golang.org/protobuf/types/known/fieldmaskpb"
 	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
 	wrapperspb "google.golang.org/protobuf/types/known/wrapperspb"
 )
@@ -156,9 +156,9 @@ type Product struct {
 	// This field must be enabled before it can be used. [Learn
 	// more](/recommendations-ai/docs/catalog#item-group-id).
 	PrimaryProductId string `protobuf:"bytes,4,opt,name=primary_product_id,json=primaryProductId,proto3" json:"primary_product_id,omitempty"`
-	// Required. 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
+	// 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](https:
 	// //www.google.com/basepages/producttype/taxonomy-with-ids.en-US.txt).
@@ -166,8 +166,8 @@ type Product struct {
 	// quality.
 	//
 	// To represent full path of category, use '>' sign to separate different
-	// hierarchies. If '>' is part of the category name, you should escape it with
-	// '\x3E'.
+	// hierarchies. If '>' is part of the category name, please replace it with
+	// other character(s).
 	//
 	// For example, if a shoes product belongs to both
 	// ["Shoes & Accessories" -> "Shoes"] and
@@ -179,6 +179,9 @@ type Product struct {
 	//        "Sports & Fitness > Athletic Clothing > Shoes"
 	//      ]
 	//
+	// Must be set for [Type.PRIMARY][] [Product][google.cloud.retail.v2.Product]
+	// otherwise an INVALID_ARGUMENT error is returned.
+	//
 	// At most 250 values are allowed per
 	// [Product][google.cloud.retail.v2.Product]. Empty values are not allowed.
 	// Each value must be a UTF-8 encoded string with a length limit of 5,000
@@ -276,34 +279,6 @@ type Product struct {
 	// [image_link](https://support.google.com/merchants/answer/6324350).
 	// Schema.org property [Product.image](https://schema.org/image).
 	Images []*Image `protobuf:"bytes,23,rep,name=images,proto3" json:"images,omitempty"`
-	// Indicates which fields in the [variants][] are retrievable in [Search][].
-	// If not set or empty, the following fields are returned:
-	//
-	// * [name][google.cloud.retail.v2.Product.name]
-	// * [availability][google.cloud.retail.v2.Product.availability]
-	// * [color_info][]
-	//
-	// Supported fields:
-	//
-	// * [name][google.cloud.retail.v2.Product.name]
-	// * [availability][google.cloud.retail.v2.Product.availability]
-	// * [color_info][]
-	// * [gtin][]
-	// * [price_info][google.cloud.retail.v2.Product.price_info]
-	// * [sizes][]
-	// * [materials][]
-	// * [patterns][]
-	// * [conditions][]
-	// * [images][google.cloud.retail.v2.Product.images]
-	// * [attributes][google.cloud.retail.v2.Product.attributes]
-	//
-	// To mark custom attributes as retrievable, include paths of the form
-	// "attributes.key" where "key" is the key of a custom attribute, as
-	// specified in [attributes][google.cloud.retail.v2.Product.attributes].
-	//
-	// Maximum number of paths is 10. Otherwise, an INVALID_ARGUMENT error is
-	// returned.
-	VariantRetrievableFields *fieldmaskpb.FieldMask `protobuf:"bytes,30,opt,name=variant_retrievable_fields,json=variantRetrievableFields,proto3" json:"variant_retrievable_fields,omitempty"`
 }
 
 func (x *Product) Reset() {
@@ -436,13 +411,6 @@ func (x *Product) GetImages() []*Image {
 	return nil
 }
 
-func (x *Product) GetVariantRetrievableFields() *fieldmaskpb.FieldMask {
-	if x != nil {
-		return x.VariantRetrievableFields
-	}
-	return nil
-}
-
 var File_google_cloud_retail_v2_product_proto protoreflect.FileDescriptor
 
 var file_google_cloud_retail_v2_product_proto_rawDesc = []byte{
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+	0x63, 0x68, 0x7d, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -577,8 +539,7 @@ var file_google_cloud_retail_v2_product_proto_goTypes = []interface{}{
 	(*timestamppb.Timestamp)(nil), // 4: google.protobuf.Timestamp
 	(*wrapperspb.Int32Value)(nil), // 5: google.protobuf.Int32Value
 	(*Image)(nil),                 // 6: google.cloud.retail.v2.Image
-	(*fieldmaskpb.FieldMask)(nil), // 7: google.protobuf.FieldMask
-	(*CustomAttribute)(nil),       // 8: google.cloud.retail.v2.CustomAttribute
+	(*CustomAttribute)(nil),       // 7: google.cloud.retail.v2.CustomAttribute
 }
 var file_google_cloud_retail_v2_product_proto_depIdxs = []int32{
 	2, // 0: google.cloud.retail.v2.Product.attributes:type_name -> google.cloud.retail.v2.Product.AttributesEntry
@@ -587,13 +548,12 @@ var file_google_cloud_retail_v2_product_proto_depIdxs = []int32{
 	0, // 3: google.cloud.retail.v2.Product.availability:type_name -> google.cloud.retail.v2.Product.Availability
 	5, // 4: google.cloud.retail.v2.Product.available_quantity:type_name -> google.protobuf.Int32Value
 	6, // 5: google.cloud.retail.v2.Product.images:type_name -> google.cloud.retail.v2.Image
-	7, // 6: google.cloud.retail.v2.Product.variant_retrievable_fields:type_name -> google.protobuf.FieldMask
-	8, // 7: google.cloud.retail.v2.Product.AttributesEntry.value:type_name -> google.cloud.retail.v2.CustomAttribute
-	8, // [8:8] is the sub-list for method output_type
-	8, // [8:8] is the sub-list for method input_type
-	8, // [8:8] is the sub-list for extension type_name
-	8, // [8:8] is the sub-list for extension extendee
-	0, // [0:8] is the sub-list for field type_name
+	7, // 6: google.cloud.retail.v2.Product.AttributesEntry.value:type_name -> google.cloud.retail.v2.CustomAttribute
+	7, // [7:7] is the sub-list for method output_type
+	7, // [7:7] is the sub-list for method input_type
+	7, // [7:7] is the sub-list for extension type_name
+	7, // [7:7] is the sub-list for extension extendee
+	0, // [0:7] is the sub-list for field type_name
 }
 
 func init() { file_google_cloud_retail_v2_product_proto_init() }
diff --git a/googleapis/cloud/retail/v2/user_event.pb.go b/googleapis/cloud/retail/v2/user_event.pb.go
index 20ebd0565..137bb84a1 100644
--- a/googleapis/cloud/retail/v2/user_event.pb.go
+++ b/googleapis/cloud/retail/v2/user_event.pb.go
@@ -140,8 +140,8 @@ type UserEvent struct {
 	// The categories associated with a category page.
 	//
 	// To represent full path of category, use '>' sign to separate different
-	// hierarchies. If '>' is part of the category name, you should escape it with
-	// '\x3E'.
+	// hierarchies. If '>' is part of the category name, please replace it with
+	// other character(s).
 	//
 	// Category pages include special pages such as sales or promotions. For
 	// instance, a special sale page may have the category hierarchy:
diff --git a/googleapis/cloud/retail/v2alpha/product.pb.go b/googleapis/cloud/retail/v2alpha/product.pb.go
index 34a423146..1465c7d17 100644
--- a/googleapis/cloud/retail/v2alpha/product.pb.go
+++ b/googleapis/cloud/retail/v2alpha/product.pb.go
@@ -28,7 +28,7 @@ import (
 	_ "google.golang.org/genproto/googleapis/api/annotations"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	fieldmaskpb "google.golang.org/protobuf/types/known/fieldmaskpb"
+	_ "google.golang.org/protobuf/types/known/fieldmaskpb"
 	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
 	wrapperspb "google.golang.org/protobuf/types/known/wrapperspb"
 )
@@ -159,9 +159,9 @@ type Product struct {
 	// This field must be enabled before it can be used. [Learn
 	// more](/recommendations-ai/docs/catalog#item-group-id).
 	PrimaryProductId string `protobuf:"bytes,4,opt,name=primary_product_id,json=primaryProductId,proto3" json:"primary_product_id,omitempty"`
-	// Required. 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
+	// 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](https:
 	// //www.google.com/basepages/producttype/taxonomy-with-ids.en-US.txt).
@@ -169,8 +169,8 @@ type Product struct {
 	// quality.
 	//
 	// To represent full path of category, use '>' sign to separate different
-	// hierarchies. If '>' is part of the category name, you should escape it with
-	// '\x3E'.
+	// hierarchies. If '>' is part of the category name, please replace it with
+	// other character(s).
 	//
 	// For example, if a shoes product belongs to both
 	// ["Shoes & Accessories" -> "Shoes"] and
@@ -182,6 +182,11 @@ type Product struct {
 	//        "Sports & Fitness > Athletic Clothing > Shoes"
 	//      ]
 	//
+	// Must be set for
+	// [Type.PRIMARY][google.cloud.retail.v2alpha.Product.Type.PRIMARY]
+	// [Product][google.cloud.retail.v2alpha.Product] otherwise an
+	// INVALID_ARGUMENT error is returned.
+	//
 	// At most 250 values are allowed per
 	// [Product][google.cloud.retail.v2alpha.Product]. Empty values are not
 	// allowed. Each value must be a UTF-8 encoded string with a length limit of
@@ -282,45 +287,6 @@ type Product struct {
 	// [image_link](https://support.google.com/merchants/answer/6324350).
 	// Schema.org property [Product.image](https://schema.org/image).
 	Images []*Image `protobuf:"bytes,23,rep,name=images,proto3" json:"images,omitempty"`
-	// The material of the product. For example, "leather", "wooden".
-	//
-	// A maximum of 5 values are allowed. Each value must be a UTF-8 encoded
-	// string with a length limit of 128 characters. Otherwise, an
-	// INVALID_ARGUMENT error is returned.
-	//
-	// Google Merchant Center property
-	// [material](https://support.google.com/merchants/answer/6324410). Schema.org
-	// property [Product.material](https://schema.org/material).
-	Materials []string `protobuf:"bytes,27,rep,name=materials,proto3" json:"materials,omitempty"`
-	// Indicates which fields in the
-	// [variants][google.cloud.retail.v2alpha.Product.variants] are retrievable in
-	// [Search][]. If not set or empty, the following fields are returned:
-	//
-	// * [name][google.cloud.retail.v2alpha.Product.name]
-	// * [availability][google.cloud.retail.v2alpha.Product.availability]
-	// * [color_info][google.cloud.retail.v2alpha.Product.color_info]
-	//
-	// Supported fields:
-	//
-	// * [name][google.cloud.retail.v2alpha.Product.name]
-	// * [availability][google.cloud.retail.v2alpha.Product.availability]
-	// * [color_info][google.cloud.retail.v2alpha.Product.color_info]
-	// * [gtin][google.cloud.retail.v2alpha.Product.gtin]
-	// * [price_info][google.cloud.retail.v2alpha.Product.price_info]
-	// * [sizes][google.cloud.retail.v2alpha.Product.sizes]
-	// * [materials][google.cloud.retail.v2alpha.Product.materials]
-	// * [patterns][google.cloud.retail.v2alpha.Product.patterns]
-	// * [conditions][google.cloud.retail.v2alpha.Product.conditions]
-	// * [images][google.cloud.retail.v2alpha.Product.images]
-	// * [attributes][google.cloud.retail.v2alpha.Product.attributes]
-	//
-	// To mark custom attributes as retrievable, include paths of the form
-	// "attributes.key" where "key" is the key of a custom attribute, as
-	// specified in [attributes][google.cloud.retail.v2alpha.Product.attributes].
-	//
-	// Maximum number of paths is 10. Otherwise, an INVALID_ARGUMENT error is
-	// returned.
-	VariantRetrievableFields *fieldmaskpb.FieldMask `protobuf:"bytes,30,opt,name=variant_retrievable_fields,json=variantRetrievableFields,proto3" json:"variant_retrievable_fields,omitempty"`
 }
 
 func (x *Product) Reset() {
@@ -453,20 +419,6 @@ func (x *Product) GetImages() []*Image {
 	return nil
 }
 
-func (x *Product) GetMaterials() []string {
-	if x != nil {
-		return x.Materials
-	}
-	return nil
-}
-
-func (x *Product) GetVariantRetrievableFields() *fieldmaskpb.FieldMask {
-	if x != nil {
-		return x.VariantRetrievableFields
-	}
-	return nil
-}
-
 var File_google_cloud_retail_v2alpha_product_proto protoreflect.FileDescriptor
 
 var file_google_cloud_retail_v2alpha_product_proto_rawDesc = []byte{
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+	0x6e, 0x63, 0x68, 0x7d, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -607,8 +551,7 @@ var file_google_cloud_retail_v2alpha_product_proto_goTypes = []interface{}{
 	(*timestamppb.Timestamp)(nil), // 4: google.protobuf.Timestamp
 	(*wrapperspb.Int32Value)(nil), // 5: google.protobuf.Int32Value
 	(*Image)(nil),                 // 6: google.cloud.retail.v2alpha.Image
-	(*fieldmaskpb.FieldMask)(nil), // 7: google.protobuf.FieldMask
-	(*CustomAttribute)(nil),       // 8: google.cloud.retail.v2alpha.CustomAttribute
+	(*CustomAttribute)(nil),       // 7: google.cloud.retail.v2alpha.CustomAttribute
 }
 var file_google_cloud_retail_v2alpha_product_proto_depIdxs = []int32{
 	2, // 0: google.cloud.retail.v2alpha.Product.attributes:type_name -> google.cloud.retail.v2alpha.Product.AttributesEntry
@@ -617,13 +560,12 @@ var file_google_cloud_retail_v2alpha_product_proto_depIdxs = []int32{
 	0, // 3: google.cloud.retail.v2alpha.Product.availability:type_name -> google.cloud.retail.v2alpha.Product.Availability
 	5, // 4: google.cloud.retail.v2alpha.Product.available_quantity:type_name -> google.protobuf.Int32Value
 	6, // 5: google.cloud.retail.v2alpha.Product.images:type_name -> google.cloud.retail.v2alpha.Image
-	7, // 6: google.cloud.retail.v2alpha.Product.variant_retrievable_fields:type_name -> google.protobuf.FieldMask
-	8, // 7: google.cloud.retail.v2alpha.Product.AttributesEntry.value:type_name -> google.cloud.retail.v2alpha.CustomAttribute
-	8, // [8:8] is the sub-list for method output_type
-	8, // [8:8] is the sub-list for method input_type
-	8, // [8:8] is the sub-list for extension type_name
-	8, // [8:8] is the sub-list for extension extendee
-	0, // [0:8] is the sub-list for field type_name
+	7, // 6: google.cloud.retail.v2alpha.Product.AttributesEntry.value:type_name -> google.cloud.retail.v2alpha.CustomAttribute
+	7, // [7:7] is the sub-list for method output_type
+	7, // [7:7] is the sub-list for method input_type
+	7, // [7:7] is the sub-list for extension type_name
+	7, // [7:7] is the sub-list for extension extendee
+	0, // [0:7] is the sub-list for field type_name
 }
 
 func init() { file_google_cloud_retail_v2alpha_product_proto_init() }
diff --git a/googleapis/cloud/retail/v2alpha/user_event.pb.go b/googleapis/cloud/retail/v2alpha/user_event.pb.go
index ea548f43b..9165f7b40 100644
--- a/googleapis/cloud/retail/v2alpha/user_event.pb.go
+++ b/googleapis/cloud/retail/v2alpha/user_event.pb.go
@@ -140,8 +140,8 @@ type UserEvent struct {
 	// The categories associated with a category page.
 	//
 	// To represent full path of category, use '>' sign to separate different
-	// hierarchies. If '>' is part of the category name, you should escape it with
-	// '\x3E'.
+	// hierarchies. If '>' is part of the category name, please replace it with
+	// other character(s).
 	//
 	// Category pages include special pages such as sales or promotions. For
 	// instance, a special sale page may have the category hierarchy:
diff --git a/googleapis/cloud/retail/v2beta/product.pb.go b/googleapis/cloud/retail/v2beta/product.pb.go
index 8861a1a74..a371b06cb 100644
--- a/googleapis/cloud/retail/v2beta/product.pb.go
+++ b/googleapis/cloud/retail/v2beta/product.pb.go
@@ -28,7 +28,7 @@ import (
 	_ "google.golang.org/genproto/googleapis/api/annotations"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	fieldmaskpb "google.golang.org/protobuf/types/known/fieldmaskpb"
+	_ "google.golang.org/protobuf/types/known/fieldmaskpb"
 	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
 	wrapperspb "google.golang.org/protobuf/types/known/wrapperspb"
 )
@@ -156,9 +156,9 @@ type Product struct {
 	// This field must be enabled before it can be used. [Learn
 	// more](/recommendations-ai/docs/catalog#item-group-id).
 	PrimaryProductId string `protobuf:"bytes,4,opt,name=primary_product_id,json=primaryProductId,proto3" json:"primary_product_id,omitempty"`
-	// Required. 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
+	// 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](https:
 	// //www.google.com/basepages/producttype/taxonomy-with-ids.en-US.txt).
@@ -166,8 +166,8 @@ type Product struct {
 	// quality.
 	//
 	// To represent full path of category, use '>' sign to separate different
-	// hierarchies. If '>' is part of the category name, you should escape it with
-	// '\x3E'.
+	// hierarchies. If '>' is part of the category name, please replace it with
+	// other character(s).
 	//
 	// For example, if a shoes product belongs to both
 	// ["Shoes & Accessories" -> "Shoes"] and
@@ -179,6 +179,10 @@ type Product struct {
 	//        "Sports & Fitness > Athletic Clothing > Shoes"
 	//      ]
 	//
+	// Must be set for [Type.PRIMARY][]
+	// [Product][google.cloud.retail.v2beta.Product] otherwise an INVALID_ARGUMENT
+	// error is returned.
+	//
 	// At most 250 values are allowed per
 	// [Product][google.cloud.retail.v2beta.Product]. Empty values are not
 	// allowed. Each value must be a UTF-8 encoded string with a length limit of
@@ -277,34 +281,6 @@ type Product struct {
 	// [image_link](https://support.google.com/merchants/answer/6324350).
 	// Schema.org property [Product.image](https://schema.org/image).
 	Images []*Image `protobuf:"bytes,23,rep,name=images,proto3" json:"images,omitempty"`
-	// Indicates which fields in the [variants][] are retrievable in [Search][].
-	// If not set or empty, the following fields are returned:
-	//
-	// * [name][google.cloud.retail.v2beta.Product.name]
-	// * [availability][google.cloud.retail.v2beta.Product.availability]
-	// * [color_info][]
-	//
-	// Supported fields:
-	//
-	// * [name][google.cloud.retail.v2beta.Product.name]
-	// * [availability][google.cloud.retail.v2beta.Product.availability]
-	// * [color_info][]
-	// * [gtin][]
-	// * [price_info][google.cloud.retail.v2beta.Product.price_info]
-	// * [sizes][]
-	// * [materials][]
-	// * [patterns][]
-	// * [conditions][]
-	// * [images][google.cloud.retail.v2beta.Product.images]
-	// * [attributes][google.cloud.retail.v2beta.Product.attributes]
-	//
-	// To mark custom attributes as retrievable, include paths of the form
-	// "attributes.key" where "key" is the key of a custom attribute, as
-	// specified in [attributes][google.cloud.retail.v2beta.Product.attributes].
-	//
-	// Maximum number of paths is 10. Otherwise, an INVALID_ARGUMENT error is
-	// returned.
-	VariantRetrievableFields *fieldmaskpb.FieldMask `protobuf:"bytes,30,opt,name=variant_retrievable_fields,json=variantRetrievableFields,proto3" json:"variant_retrievable_fields,omitempty"`
 }
 
 func (x *Product) Reset() {
@@ -437,13 +413,6 @@ func (x *Product) GetImages() []*Image {
 	return nil
 }
 
-func (x *Product) GetVariantRetrievableFields() *fieldmaskpb.FieldMask {
-	if x != nil {
-		return x.VariantRetrievableFields
-	}
-	return nil
-}
-
 var File_google_cloud_retail_v2beta_product_proto protoreflect.FileDescriptor
 
 var file_google_cloud_retail_v2beta_product_proto_rawDesc = []byte{
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 }
 
 var (
@@ -581,8 +544,7 @@ var file_google_cloud_retail_v2beta_product_proto_goTypes = []interface{}{
 	(*timestamppb.Timestamp)(nil), // 4: google.protobuf.Timestamp
 	(*wrapperspb.Int32Value)(nil), // 5: google.protobuf.Int32Value
 	(*Image)(nil),                 // 6: google.cloud.retail.v2beta.Image
-	(*fieldmaskpb.FieldMask)(nil), // 7: google.protobuf.FieldMask
-	(*CustomAttribute)(nil),       // 8: google.cloud.retail.v2beta.CustomAttribute
+	(*CustomAttribute)(nil),       // 7: google.cloud.retail.v2beta.CustomAttribute
 }
 var file_google_cloud_retail_v2beta_product_proto_depIdxs = []int32{
 	2, // 0: google.cloud.retail.v2beta.Product.attributes:type_name -> google.cloud.retail.v2beta.Product.AttributesEntry
@@ -591,13 +553,12 @@ var file_google_cloud_retail_v2beta_product_proto_depIdxs = []int32{
 	0, // 3: google.cloud.retail.v2beta.Product.availability:type_name -> google.cloud.retail.v2beta.Product.Availability
 	5, // 4: google.cloud.retail.v2beta.Product.available_quantity:type_name -> google.protobuf.Int32Value
 	6, // 5: google.cloud.retail.v2beta.Product.images:type_name -> google.cloud.retail.v2beta.Image
-	7, // 6: google.cloud.retail.v2beta.Product.variant_retrievable_fields:type_name -> google.protobuf.FieldMask
-	8, // 7: google.cloud.retail.v2beta.Product.AttributesEntry.value:type_name -> google.cloud.retail.v2beta.CustomAttribute
-	8, // [8:8] is the sub-list for method output_type
-	8, // [8:8] is the sub-list for method input_type
-	8, // [8:8] is the sub-list for extension type_name
-	8, // [8:8] is the sub-list for extension extendee
-	0, // [0:8] is the sub-list for field type_name
+	7, // 6: google.cloud.retail.v2beta.Product.AttributesEntry.value:type_name -> google.cloud.retail.v2beta.CustomAttribute
+	7, // [7:7] is the sub-list for method output_type
+	7, // [7:7] is the sub-list for method input_type
+	7, // [7:7] is the sub-list for extension type_name
+	7, // [7:7] is the sub-list for extension extendee
+	0, // [0:7] is the sub-list for field type_name
 }
 
 func init() { file_google_cloud_retail_v2beta_product_proto_init() }
diff --git a/googleapis/cloud/retail/v2beta/user_event.pb.go b/googleapis/cloud/retail/v2beta/user_event.pb.go
index 7129c60ee..ff5ee2a27 100644
--- a/googleapis/cloud/retail/v2beta/user_event.pb.go
+++ b/googleapis/cloud/retail/v2beta/user_event.pb.go
@@ -140,8 +140,8 @@ type UserEvent struct {
 	// The categories associated with a category page.
 	//
 	// To represent full path of category, use '>' sign to separate different
-	// hierarchies. If '>' is part of the category name, you should escape it with
-	// '\x3E'.
+	// hierarchies. If '>' is part of the category name, please replace it with
+	// other character(s).
 	//
 	// Category pages include special pages such as sales or promotions. For
 	// instance, a special sale page may have the category hierarchy:
diff --git a/regen.txt b/regen.txt
index 65cb98831..864c04cc5 100644
--- a/regen.txt
+++ b/regen.txt
@@ -1 +1 @@
-00bbad4dfd6633cf4b5f9596c1f93b756bb5c776
\ No newline at end of file
+7f31f40209008ad24058579e7112e45fc9d5715e
\ No newline at end of file