Create Work Item in Team Services Through API

Using Master\\areapath instead (not Master\areapath).

Sample body:

[  {    "op": "add",    "path": "/fields/System.Title",    "value": "PBIAPI2"  },  {    "op": "add",    "path": "/fields/System.AreaPath",    "value": "Scrum2015\\SharedArea"  }]

On the other hand, it’s better to create work item by using VSTS/TFS API with Microsoft Team Foundation Server Extended Client package.

Simple sample code:

var u = new Uri("https://[account].visualstudio.com");            VssCredentials c = new VssCredentials(new Microsoft.VisualStudio.Services.Common.VssBasicCredential(string.Empty, "[personal access token]"));           var connection = new VssConnection(u, c);var workitemClient = connection.GetClient<WorkItemTrackingHttpClient>();var workitemtype = "Product Backlog Item";            string teamProjectName = "Scrum2015";            var document = new Microsoft.VisualStudio.Services.WebApi.Patch.Json.JsonPatchDocument();            document.Add(    new Microsoft.VisualStudio.Services.WebApi.Patch.Json.JsonPatchOperation()    {        Path = "/fields/Microsoft.VSTS.Common.Discipline",        Operation = Microsoft.VisualStudio.Services.WebApi.Patch.Operation.Add,        Value = "development"    });            document.Add(                new Microsoft.VisualStudio.Services.WebApi.Patch.Json.JsonPatchOperation()                {                    Path = "/fields/System.Title",                    Operation = Microsoft.VisualStudio.Services.WebApi.Patch.Operation.Add,                    Value = string.Format("{0} {1}", "RESTAPI", 6)                });            document.Add(new Microsoft.VisualStudio.Services.WebApi.Patch.Json.JsonPatchOperation()            {                Path = "/fields/System.AreaPath",                Operation = Microsoft.VisualStudio.Services.WebApi.Patch.Operation.Add,                Value =string.Format("{0}\\{1}",teamProjectName, "SharedArea")            });            document.Add(                new Microsoft.VisualStudio.Services.WebApi.Patch.Json.JsonPatchOperation()                {                    Path = "/fields/System.AssignedTo",                    Operation = Microsoft.VisualStudio.Services.WebApi.Patch.Operation.Add,                    Value = "[user account]"                });            document.Add(                new Microsoft.VisualStudio.Services.WebApi.Patch.Json.JsonPatchOperation()                {                    Path = "/fields/System.Description",                    Operation = Microsoft.VisualStudio.Services.WebApi.Patch.Operation.Add,                    Value = "destest"                });var workitem= workitemClient.CreateWorkItemAsync(document, teamProjectName, workitemtype).Result;

The method must be POST and Uri correct for consume the Api tfs is :

https://dev.azure.com/{organization}/{proyect}/_apis/wit/workitems/${type}?api-version=5.0

Check in :

https://docs.microsoft.com/en-us/rest/api/azure/devops/wit/work%20items/create?view=azure-devops-rest-5.0

The next code function for me.

 static void Main(string[] args)    {        CreateWorkItem();    }    public static void CreateWorkItem()    {        string _tokenAccess = "************"; //Click in security and get Token and give full access https://azure.microsoft.com/en-us/services/devops/        string type = "Bug";        string organization = "type your organization";        string proyect = "type your proyect";        string _UrlServiceCreate = $"https://dev.azure.com/{organization}/{proyect}/_apis/wit/workitems/${type}?api-version=5.0";        dynamic WorkItem = new List<dynamic>() {                new                {                    op = "add",                    path = "/fields/System.Title",                    value = "Sample Bug test"                }            };        var WorkItemValue = new StringContent(JsonConvert.SerializeObject(WorkItem), Encoding.UTF8, "application/json-patch+json");        var JsonResultWorkItemCreated = HttpPost(_UrlServiceCreate, _tokenAccess, WorkItemValue);    }    public static string HttpPost(string urlService, string token, StringContent postValue)    {        try        {            string request = string.Empty;            using (HttpClient httpClient = new HttpClient())            {                httpClient.DefaultRequestHeaders.Accept.Clear();                httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));                httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(ASCIIEncoding.ASCII.GetBytes(string.Format("{0}:{1}", "", token))));                using (HttpRequestMessage httpRequestMessage = new HttpRequestMessage(new HttpMethod("POST"), urlService) { Content = postValue })                {                    var httpResponseMessage = httpClient.SendAsync(httpRequestMessage).Result;                    if (httpResponseMessage.IsSuccessStatusCode)                        request = httpResponseMessage.Content.ReadAsStringAsync().Result;                }            }            return request;        }        catch (Exception ex)        {            throw new Exception(ex.Message);        }    }