Google Adwords 通过 API 添加带有特殊字符的否定关键字

Question

我正在尝试通过 CampaignCriterionService 添加一个否定关键字，该关键字是从特定广告系列的 SearchTerms 报告中检索到的。

我有可以将否定关键字添加到广告系列的工作代码，太好了。问题来自关键字文本包含“特殊字符”（see here）的位置

错误：

关键字文本包含无效字符或符号..（错误：CriterionError.KEYWORD_HAS_INVALID_CHARS，FieldPath：操作[0].operand.criterion.text，触发器：普通镜像100 * 60）

我从搜索字词报告中提取了关键字，它有一个关键字 ID。因此，我尝试使用以下关键字将关键字添加为否定关键字

示例：

    using Google.Api.Ads.AdWords.Lib;
    using Google.Api.Ads.AdWords.Util.Reports.v201802;
    using Google.Api.Ads.AdWords.v201802;

     [TestMethod]
        public void AddSingleNegativeKeywordToCampaign()
        {
            GoogleAdwords.Model.Campaign campaign = new GoogleAdwords.Model.Campaign(CampaignID);
            List<Keyword> keywords = new List<Keyword> { new Keyword { id = 27736878000, matchType = KeywordMatchType.EXACT } };
            campaign.AddNegativeKeywordstoCampaign(keywords);
        }

        public class Campaign : AdwordsBase
    {

        public long CampaignId { get; set; }
        public string CampaignName;
        
        public Campaign(long campaignId) : base()
        {
            CampaignId = campaignId;
        }
        
   public void AddNegativeKeywordstoCampaign(List<Keyword> ListofKeywords)
        {
            AddKeywordstoCampaign(ListofKeywords, Operator.ADD);
        }

        
    private void AddKeywordstoCampaign(List<Keyword> keywords, Operator @operator)
        {
            using (CampaignCriterionService campaignCriterionService =
          (CampaignCriterionService)user.GetService(
              AdWordsService.v201802.CampaignCriterionService))
            {

                List<CampaignCriterionOperation> operations = new List<CampaignCriterionOperation>();

                foreach (Keyword keyword in keywords)
                {
                    // Create the biddable ad group criterion.
                    NegativeCampaignCriterion keywordCriterion = new NegativeCampaignCriterion();
                    keywordCriterion.campaignId = CampaignId;
                    keywordCriterion.criterion = keyword;

                    // Create the operations.
                    CampaignCriterionOperation operation = new CampaignCriterionOperation();
                    operation.@operator = @operator;
                    operation.operand = keywordCriterion;

                    operations.Add(operation);
                }
                try
                {
                    // Create the keywords.
                    CampaignCriterionReturnValue retVal = campaignCriterionService.mutate(
                        operations.ToArray());

                    // Display the results.
                    if (retVal != null && retVal.value != null)
                    {
                        foreach (CampaignCriterion campaignCriterion in retVal.value)
                        {
                            // If you are adding multiple type of criteria, then you may need to
                            // check for
                            //
                            // if (adGroupCriterion is Keyword) { ... }
                            //
                            // to identify the criterion type.
                            Debug.WriteLine("Keyword with Campaign id = '{0}', keyword id = '{1}', text = " +
                                "'{2}' and match type = '{3}' was {4}.", campaignCriterion.campaignId,
                                campaignCriterion.criterion.id, (campaignCriterion.criterion as Keyword).text,
                                (campaignCriterion.criterion as Keyword).matchType, @operator.ToString());
                        }
                    }
                    else
                    {
                        Debug.WriteLine("No keywords were added.");
                    }
                }
                catch (Exception e)
                {
                    throw new System.ApplicationException("Failed to create keywords.", e);
                }
            }
        }
    }

但是这不起作用，因为 api 报告错误：

缺少必填字段..（错误：RequiredError.REQUIRED，FieldPath：操作[0].operand.criterion.text，触发器：）

我的问题是

我可以在 Adwords UI 中将搜索词添加为否定词，因此，它一定是可能的。有没有人能够使用最新版本的 Adwords API 实现这一目标？ (v201802)

说得很清楚，我认为代码本身没有任何问题，更多的是关于如何添加属于此职权范围的关键字的问题。

Answer 1

根据文档here 看来，特殊字符无法通过任何媒介添加到广告系列中。