Azure DevOps REST API创建工作项：Priority与StackRank字段不生效

使用Azure DevOps REST API创建工作项时，尝试设置Microsoft.VSTS.Common.Priority和Microsoft.VSTS.Common.StackRank字段，但工作项创建成功后这两个字段未被赋值，API也没有返回错误提示。

以下是创建工作项的实现代码：

public WorkItemDTO CreateWorkItem(WorkItemDTO workItem, string workItemType)
{
    string tokenFormat = $"{string.Empty}:{GetTokenConfig()}";
    string credentials = Convert.ToBase64String(Encoding.ASCII.GetBytes(tokenFormat));

    using (var client = new HttpClient())
    {
        client.BaseAddress = new Uri($"{DEVOPS_ORG_URL}/{GetProjectNameConfig()}/");
        client.DefaultRequestHeaders.Accept.Clear();
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json-patch+json"));
        client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", credentials);

        string uri = $"_apis/wit/workitems/${workItemType}?api-version=7.1-preview.3";

        var patchDocument = new[]
        {
            new { op = "add", path = "/fields/System.Title", value = workItem.Title },
            new { op = "add", path = "/fields/System.Description", value = workItem.Description },
            new { op = "add", path = "/fields/Microsoft.VSTS.Common.Priority", value = workItem.Priority },
            new { op = "add", path = "/fields/Microsoft.VSTS.Common.StackRank", value = workItem.BusinessValue }
        };

        var jsonContent = JsonConvert.SerializeObject(patchDocument);
        var content = new StringContent(jsonContent, Encoding.UTF8, "application/json-patch+json");

        HttpResponseMessage response = client.PostAsync(uri, content).Result;

        if (response.IsSuccessStatusCode)
        {
            string responseBody = response.Content.ReadAsStringAsync().Result;
            var createdWorkItemEntity = JsonConvert.DeserializeObject<WorkItemEntity>(responseBody);
            var createdWorkItemDTO = _mapper.Map<WorkItemDTO>(createdWorkItemEntity);
            return createdWorkItemDTO;
        }
        else
        {
            Console.WriteLine("Error creating work item. Status code: " + response.StatusCode);
            string responseBody = response.Content.ReadAsStringAsync().Result;
            Console.WriteLine("Response body: " + responseBody);
        }
    }

    return null;
}

已尝试操作 #

• 在JSON Patch文档中包含Microsoft.VSTS.Common.Priority和Microsoft.VSTS.Common.StackRank字段
• 向Azure DevOps REST API发送包含该Patch文档的POST请求

预期与实际结果 #

• 预期结果：新建工作项的两个目标字段按提供的值设置
• 实际结果：工作项创建成功，但两个字段未被赋值，且API无有效错误提示

疑问 #

• Patch文档中字段指定是否正确？
• API版本7.1-preview.3或字段名称是否有问题？
• 请求格式或API使用是否有遗漏细节？

内容的提问来源于stack exchange，提问作者Neima Mohamed Abdoulkader