--- /dev/null
+// Copyright 2019 Google LLC.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+syntax = "proto3";
+
+package google.ads.googleads.v1.errors;
+
+import "google/api/annotations.proto";
+
+option csharp_namespace = "Google.Ads.GoogleAds.V1.Errors";
+option go_package = "google.golang.org/genproto/googleapis/ads/googleads/v1/errors;errors";
+option java_multiple_files = true;
+option java_outer_classname = "AdGroupAdErrorProto";
+option java_package = "com.google.ads.googleads.v1.errors";
+option objc_class_prefix = "GAA";
+option php_namespace = "Google\\Ads\\GoogleAds\\V1\\Errors";
+option ruby_package = "Google::Ads::GoogleAds::V1::Errors";
+// Proto file describing ad group ad errors.
+
+// Container for enum describing possible ad group ad errors.
+message AdGroupAdErrorEnum {
+ // Enum describing possible ad group ad errors.
+ enum AdGroupAdError {
+ // Enum unspecified.
+ UNSPECIFIED = 0;
+
+ // The received error code is not known in this version.
+ UNKNOWN = 1;
+
+ // No link found between the adgroup ad and the label.
+ AD_GROUP_AD_LABEL_DOES_NOT_EXIST = 2;
+
+ // The label has already been attached to the adgroup ad.
+ AD_GROUP_AD_LABEL_ALREADY_EXISTS = 3;
+
+ // The specified ad was not found in the adgroup
+ AD_NOT_UNDER_ADGROUP = 4;
+
+ // Removed ads may not be modified
+ CANNOT_OPERATE_ON_REMOVED_ADGROUPAD = 5;
+
+ // An ad of this type is deprecated and cannot be created. Only deletions
+ // are permitted.
+ CANNOT_CREATE_DEPRECATED_ADS = 6;
+
+ // Text ads are deprecated and cannot be created. Use expanded text ads
+ // instead.
+ CANNOT_CREATE_TEXT_ADS = 7;
+
+ // A required field was not specified or is an empty string.
+ EMPTY_FIELD = 8;
+
+ // An ad may only be modified once per call
+ RESOURCE_REFERENCED_IN_MULTIPLE_OPS = 9;
+ }
+
+
+}