Why the error in coming while creating a JIRA issue using REST API (C#)?

Question

I am working on a requirement where I need to create multiple issues in one go by Using the REST API. However, I start with uploading a single issue because I am new in API integration. I write few lines of code in c#. Here is my code:

static void Main(string[] args)
    {
        JavaScriptSerializer jss = new JavaScriptSerializer();
        JiraCreateIssueRequest jcir = new JiraCreateIssueRequest();
        //////////////////////////////////////////////////////////////////
        string sUsername = "aaa@xyz.com";
        string sPassword = "TestPassword";
        string uri = @"https://domain.atlassian.net/rest/api/2/issue";
        Uri address = new Uri(uri);
        HttpWebRequest request;
        //HttpWebResponse response = null;
        StreamReader sr;
        string sData = null;
        string returnXML = string.Empty;
        if (address == null) { throw new ArgumentNullException("address"); }
        //jcir.project.ID = 100;
        //jcir.Summary = "This issue is created by JIRA REST Api";
        //jcir.Description = "This issue is created by JIRA REST Api";
        //jcir.IssueType.ID = 1;
        sData = @"{""fields"":{""project"":{""key"": ""SITT""},""summary"": ""REST API Uploading"",""description"":""Creating an issue via REST API"",""issuetype"": {""name"": ""Test""}}}";
        //sData = jcir.ToString();
        try
        {
            // Create and initialize the web request
            request = WebRequest.Create(address) as HttpWebRequest;
            request.Method = "POST";
            request.ContentType = "application/json";
            // Add the Authorization header to the web request
            request.Credentials = new NetworkCredential(sUsername, sPassword);
            //Write Data
            if (sData != null)
            {
                byte[] byteData = UTF8Encoding.UTF8.GetBytes(sData);
                // Set the content length in the request headers
                request.ContentLength = byteData.Length;
                // Write data
                using (Stream postStream = request.GetRequestStream())
                {
                    postStream.Write(byteData, 0, byteData.Length);
                }
                // Get response
                using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
                {
                    // Get the response stream
                    StreamReader reader = new StreamReader(response.GetResponseStream());
                    string str = reader.ReadToEnd();
                }
            }
        }
        catch (WebException wex)
        {
            // This exception will be raised if the server didn't return 200 - OK
            // Try to retrieve more information about the error
            if (wex.Response != null)
            {
                using (HttpWebResponse errorResponse = (HttpWebResponse)wex.Response)
                {
                    try
                    {
                        string sError = string.Format("The server returned '{0}' with the status code {1} ({2:d}).",
                        errorResponse.StatusDescription, errorResponse.StatusCode,
                        errorResponse.StatusCode);
                        sr = new StreamReader(errorResponse.GetResponseStream(), Encoding.UTF8);
                        returnXML = sr.ReadToEnd();
                    }
                    finally
                    {
                        if (errorResponse != null) errorResponse.Close();
                    }
                }
            }
            else
            {
                throw new Exception(wex.Message);
            }
        }
    }

    public class JiraCreateIssueRequest
    {
        protected JavaScriptSerializer jss = new JavaScriptSerializer();

        public JiraProject project = new JiraProject();
        public string Summary { get; set; }
        public string Description { get; set; }
        public JiraIssueType IssueType = new JiraIssueType();

        public override string ToString()
        {
            return jss.Serialize(this);
        }
    }

    public class JiraCreateIssueResponse
    {


    }

    public class JiraProject
    {
        public int ID { get; set; }
        //public string Key { get; set; }
    }

    public class JiraIssueType
    {
        public int ID { get; set; }
        //public string Name { get; set; }
    }

But when I am running the above code, I am getting the '400' error. I googled it and found that this usually this error comes when the URL or the Username/Password are incorrect. I cross checked both the things however its correct.

May I know why this error is coming or what will be the resolution of the problem?

Answer 1

Your password is not your login password, it's an API token that you get from here:

https://id.atlassian.com/manage/api-tokens

Generate a token, then use that as your password.