TFS rest API- Create Work Item

Question

I am trying to create a work item using the Microsoft.TeamFoundationService.Client api but everytime I try to create the work item it fails with the error

New work item updates must specify Area and Iteration node ids.

So far I have the following:

var connection = new VssConnection(baseUrl, vssBasicCredential);
var witClient = connection.GetClient<WorkItemTrackingHttpClient>();

var patchDocument = new JsonPatchDocument();
patchDocument.Add(new JsonPatchOperation
{
  Operation = Operation.Add,
  Path = "/Fields/System.Title",
  Value = title
});

...
var newlyCreatedUserStory = witClient.CreateWorkItemAsync(patchDocument,
                                                          testProject.Id,
                                                          "User Story").Result;

It is at this point the exception is thrown. I have tried to add in the values for Area and Interation node as well:

        patchDocument.Add(new JsonPatchOperation
        {
            Operation = Operation.Add,
            Path = "/Fields/System.AreaId",
            Value = parentWorkItem.Fields["System.AreaId"].ToString()
        });
        patchDocument.Add(new JsonPatchOperation
        {
            Operation = Operation.Add,
            Path = "/Fields/System.AreaPath",
            Value = parentWorkItem.Fields["System.AreaPath"].ToString()
        });
        patchDocument.Add(new JsonPatchOperation
        {
            Operation = Operation.Add,
            Path = "/Fields/System.TeamProject",
            Value = parentWorkItem.Fields["System.TeamProject"].ToString()
        });
        patchDocument.Add(new JsonPatchOperation
        {
            Operation = Operation.Add,
            Path = "/Fields/System.NodeName",
            Value = parentWorkItem.Fields["System.NodeName"].ToString()
        });
        patchDocument.Add(new JsonPatchOperation
        {
            Operation = Operation.Add,
            Path = "/Fields/System.AreaLevel1",
            Value = parentWorkItem.Fields["System.AreaLevel1"].ToString()
        });
        patchDocument.Add(new JsonPatchOperation
        {
            Operation = Operation.Add,
            Path = "/Fields/System.IterationId",
            Value = parentWorkItem.Fields["System.IterationId"].ToString()
        });
        patchDocument.Add(new JsonPatchOperation
        {
            Operation = Operation.Add,
            Path = "/Fields/System.IterationPath",
            Value = parentWorkItem.Fields["System.IterationPath"].ToString()
        });
        patchDocument.Add(new JsonPatchOperation
        {
            Operation = Operation.Add,
            Path = "/Fields/System.IterationLevel1",
            Value = parentWorkItem.Fields["System.IterationLevel1"].ToString()
        });

Any ideas? Thanks in advance.

Answer 1

Changing

Path = "/Fields/System.Title"

to

Path = "/fields/System.Title"

did the trick for me.

Answer 2

If you are going to use with TFS2015. Suggest you do not test with VSTS. There maybe some difference between both such as API version.

As far as I know create work item don't need to specify Area and Iteration node ids. Just need the title. Sample code you could refer official tutorial: Create a work item

Since you are using a preview library, you could also give a try with stable version such as Microsoft Team Foundation Server Client 14.102.0

Also add a similar question for your reference: TFS2015 REST API Library: Create a new Work Item